725463645 has 16 divisors (see below), whose sum is σ = 1168432512. Its totient is φ = 384350400.

The previous prime is 725463637. The next prime is 725463691. The reversal of 725463645 is 546364527.

It is not a de Polignac number, because 725463645 - 2³ = 725463637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 725463597 and 725463606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157882 + ... + 162411.

It is an arithmetic number, because the mean of its divisors is an integer number (73027032).

Almost surely, 2^725463645 is an apocalyptic number.

It is an amenable number.

725463645 is a deficient number, since it is larger than the sum of its proper divisors (442968867).

725463645 is a wasteful number, since it uses less digits than its factorization.

725463645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320452.

The product of its digits is 604800, while the sum is 42.

The square root of 725463645 is about 26934.4323311259. The cubic root of 725463645 is about 898.5423503260.

The spelling of 725463645 in words is "seven hundred twenty-five million, four hundred sixty-three thousand, six hundred forty-five".