725378136 has 32 divisors (see below), whose sum is σ = 2072509440. Its totient is φ = 207250848.

The previous prime is 725378111. The next prime is 725378167. The reversal of 725378136 is 631873527.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2158696 + ... + 2159031.

It is an arithmetic number, because the mean of its divisors is an integer number (64765920).

Almost surely, 2^725378136 is an apocalyptic number.

It is an amenable number.

725378136 is an abundant number, since it is smaller than the sum of its proper divisors (1347131304).

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

725378136 is a wasteful number, since it uses less digits than its factorization.

725378136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4317743 (or 4317739 counting only the distinct ones).

The product of its digits is 211680, while the sum is 42.

The square root of 725378136 is about 26932.8449295651. The cubic root of 725378136 is about 898.5070457879.

The spelling of 725378136 in words is "seven hundred twenty-five million, three hundred seventy-eight thousand, one hundred thirty-six".