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378200225 = 52131973839
BaseRepresentation
bin10110100010101…
…110000010100001
3222100122120011202
4112202232002201
51233304401400
6101310050545
712241435364
oct2642560241
9870576152
10378200225
11184536477
12a67a9a55
136047ac20
143832c0db
15233094d5
hex168ae0a1

378200225 has 48 divisors (see below), whose sum is σ = 539548800. Its totient is φ = 260651520.

The previous prime is 378200203. The next prime is 378200227. The reversal of 378200225 is 522002873.

It is not a de Polignac number, because 378200225 - 210 = 378199201 is a prime.

It is a super-3 number, since 3×3782002253 (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (378200227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 450356 + ... + 451194.

It is an arithmetic number, because the mean of its divisors is an integer number (11240600).

Almost surely, 2378200225 is an apocalyptic number.

It is an amenable number.

378200225 is a deficient number, since it is larger than the sum of its proper divisors (161348575).

378200225 is a wasteful number, since it uses less digits than its factorization.

378200225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954 (or 949 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 378200225 is about 19447.3706448970. The cubic root of 378200225 is about 723.1703209337.

The spelling of 378200225 in words is "three hundred seventy-eight million, two hundred thousand, two hundred twenty-five".

Divisors: 1 5 13 19 25 65 73 95 247 325 365 475 839 949 1235 1387 1825 4195 4745 6175 6935 10907 15941 18031 20975 23725 34675 54535 61247 79705 90155 207233 272675 306235 398525 450775 796211 1036165 1163693 1531175 3981055 5180825 5818465 15128009 19905275 29092325 75640045 378200225