625321530 has 48 divisors (see below), whose sum is σ = 1653406560. Its totient is φ = 163924704.

The previous prime is 625321513. The next prime is 625321531. The reversal of 625321530 is 35123526.

625321530 is a `hidden beast` number, since 62 + 53 + 21 + 530 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 625321494 and 625321503.

It is not an unprimeable number, because it can be changed into a prime (625321531) 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, 53572 + ... + 64191.

It is an arithmetic number, because the mean of its divisors is an integer number (34445970).

Almost surely, 2^625321530 is an apocalyptic number.

625321530 is an abundant number, since it is smaller than the sum of its proper divisors (1028085030).

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

625321530 is a wasteful number, since it uses less digits than its factorization.

625321530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117835 (or 117832 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 625321530 is about 25006.4297731603. The cubic root of 625321530 is about 855.1345638211.

The spelling of 625321530 in words is "six hundred twenty-five million, three hundred twenty-one thousand, five hundred thirty".