725640276 has 24 divisors (see below), whose sum is σ = 1695169504. Its totient is φ = 241593120.

The previous prime is 725640239. The next prime is 725640283. The reversal of 725640276 is 672046527.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25210 + ... + 45681.

Almost surely, 2^725640276 is an apocalyptic number.

It is an amenable number.

725640276 is an abundant number, since it is smaller than the sum of its proper divisors (969529228).

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

725640276 is a wasteful number, since it uses less digits than its factorization.

725640276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71751 (or 71749 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 725640276 is about 26937.7110386165. The cubic root of 725640276 is about 898.6152680875.

The spelling of 725640276 in words is "seven hundred twenty-five million, six hundred forty thousand, two hundred seventy-six".