625324976640 has 1600 divisors, whose sum is σ = 2848157706240. Its totient is φ = 127561236480.

The previous prime is 625324976597. The next prime is 625324976651. The reversal of 625324976640 is 46679423526.

625324976640 is a `hidden beast` number, since 6 + 2 + 53 + 2 + 497 + 66 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 584962026 + ... + 584963094.

Almost surely, 2^625324976640 is an apocalyptic number.

625324976640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 625324976640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1424078853120).

625324976640 is an abundant number, since it is smaller than the sum of its proper divisors (2222832729600).

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

625324976640 is a wasteful number, since it uses less digits than its factorization.

625324976640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155 (or 1130 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 54.

The spelling of 625324976640 in words is "six hundred twenty-five billion, three hundred twenty-four million, nine hundred seventy-six thousand, six hundred forty".