725915136 has 160 divisors (see below), whose sum is σ = 2032021728. Its totient is φ = 230031360.

The previous prime is 725915087. The next prime is 725915137. The reversal of 725915136 is 631519527.

It is a junction number, because it is equal to n+sod(n) for n = 725915094 and 725915103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725915137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3011976 + ... + 3012216.

Almost surely, 2^725915136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 725915136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1016010864).

725915136 is an abundant number, since it is smaller than the sum of its proper divisors (1306106592).

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

725915136 is a wasteful number, since it uses less digits than its factorization.

725915136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 336 counting only the distinct ones).

The product of its digits is 56700, while the sum is 39.

The square root of 725915136 is about 26942.8123253680. The cubic root of 725915136 is about 898.7287137444.

The spelling of 725915136 in words is "seven hundred twenty-five million, nine hundred fifteen thousand, one hundred thirty-six".