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625366480 = 2457817081
BaseRepresentation
bin100101010001100…
…101010111010000
31121120201220112111
4211101211113100
52240043211410
6142015435104
721332345614
oct4521452720
91546656474
10625366480
112a1004102
12155525a94
139c73a84b
145d0ab344
1539d7db8a
hex254655d0

625366480 has 20 divisors (see below), whose sum is σ = 1453977252. Its totient is φ = 250146560.

The previous prime is 625366439. The next prime is 625366487. The reversal of 625366480 is 84663526.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 215384976 + 409981504 = 14676^2 + 20248^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625366487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3908461 + ... + 3908620.

Almost surely, 2625366480 is an apocalyptic number.

It is an amenable number.

625366480 is an abundant number, since it is smaller than the sum of its proper divisors (828610772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

625366480 is a wasteful number, since it uses less digits than its factorization.

625366480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7817094 (or 7817088 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 625366480 is about 25007.3285258542. The cubic root of 625366480 is about 855.1550532152.

The spelling of 625366480 in words is "six hundred twenty-five million, three hundred sixty-six thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 7817081 15634162 31268324 39085405 62536648 78170810 125073296 156341620 312683240 625366480