725766540 has 24 divisors (see below), whose sum is σ = 2032146480. Its totient is φ = 193537728.

The previous prime is 725766539. The next prime is 725766553. The reversal of 725766540 is 45667527.

It is a junction number, because it is equal to n+sod(n) for n = 725766492 and 725766501.

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, 6047995 + ... + 6048114.

It is an arithmetic number, because the mean of its divisors is an integer number (84672770).

Almost surely, 2^725766540 is an apocalyptic number.

It is an amenable number.

725766540 is an abundant number, since it is smaller than the sum of its proper divisors (1306379940).

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

725766540 is a wasteful number, since it uses less digits than its factorization.

725766540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12096121 (or 12096119 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 42.

The square root of 725766540 is about 26940.0545656463. The cubic root of 725766540 is about 898.6673858202.

The spelling of 725766540 in words is "seven hundred twenty-five million, seven hundred sixty-six thousand, five hundred forty".