625296321 has 32 divisors (see below), whose sum is σ = 1002798720. Its totient is φ = 382802112.

The previous prime is 625296313. The next prime is 625296323. The reversal of 625296321 is 123692526.

625296321 is a `hidden beast` number, since 625 + 2 + 9 + 6 + 3 + 21 = 666.

It is not a de Polignac number, because 625296321 - 2³ = 625296313 is a prime.

It is a super-2 number, since 2×625296321² = 781990978112270082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (625296323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64626 + ... + 73668.

It is an arithmetic number, because the mean of its divisors is an integer number (31337460).

Almost surely, 2^625296321 is an apocalyptic number.

It is an amenable number.

625296321 is a deficient number, since it is larger than the sum of its proper divisors (377502399).

625296321 is a wasteful number, since it uses less digits than its factorization.

625296321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9262 (or 9256 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 625296321 is about 25005.9257177174. The cubic root of 625296321 is about 855.1230724652.

The spelling of 625296321 in words is "six hundred twenty-five million, two hundred ninety-six thousand, three hundred twenty-one".