725762740 has 24 divisors (see below), whose sum is σ = 1527117480. Its totient is φ = 289730688.

The previous prime is 725762711. The next prime is 725762783. The reversal of 725762740 is 47267527.

It can be written as a sum of positive squares in 4 ways, for example, as 428407204 + 297355536 = 20698^2 + 17244^2 .

It is a junction number, because it is equal to n+sod(n) for n = 725762693 and 725762702.

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, 25467 + ... + 45826.

It is an arithmetic number, because the mean of its divisors is an integer number (63629895).

Almost surely, 2^725762740 is an apocalyptic number.

It is an amenable number.

725762740 is an abundant number, since it is smaller than the sum of its proper divisors (801354740).

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

725762740 is a wasteful number, since it uses less digits than its factorization.

725762740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71811 (or 71809 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 40.

The square root of 725762740 is about 26939.9840385996. The cubic root of 725762740 is about 898.6658173902.

The spelling of 725762740 in words is "seven hundred twenty-five million, seven hundred sixty-two thousand, seven hundred forty".