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254320225 = 5219717541
BaseRepresentation
bin11110010100010…
…01111001100001
3122201112210202121
433022021321201
51010101221400
641122544241
76205454245
oct1712117141
9581483677
10254320225
11120614605
1271208081
13408c5c53
1425ac2425
15174d921a
hexf289e61

254320225 has 24 divisors (see below), whose sum is σ = 336674880. Its totient is φ = 190008000.

The previous prime is 254320219. The next prime is 254320229. The reversal of 254320225 is 522023452.

It is a happy number.

254320225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 254320225 - 25 = 254320193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 254320225.

It is not an unprimeable number, because it can be changed into a prime (254320229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29955 + ... + 37495.

It is an arithmetic number, because the mean of its divisors is an integer number (14028120).

Almost surely, 2254320225 is an apocalyptic number.

254320225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

254320225 is a deficient number, since it is larger than the sum of its proper divisors (82354655).

254320225 is a wasteful number, since it uses less digits than its factorization.

254320225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7641 (or 7636 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 254320225 is about 15947.4206378336. The cubic root of 254320225 is about 633.5685821977.

Adding to 254320225 its reverse (522023452), we get a palindrome (776343677).

The spelling of 254320225 in words is "two hundred fifty-four million, three hundred twenty thousand, two hundred twenty-five".

Divisors: 1 5 19 25 71 95 355 475 1349 1775 6745 7541 33725 37705 143279 188525 535411 716395 2677055 3581975 10172809 13385275 50864045 254320225