725217492 has 12 divisors (see below), whose sum is σ = 1692174176. Its totient is φ = 241739160.

The previous prime is 725217487. The next prime is 725217509. The reversal of 725217492 is 294712527.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 725217492.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30217384 + ... + 30217407.

Almost surely, 2^725217492 is an apocalyptic number.

It is an amenable number.

725217492 is an abundant number, since it is smaller than the sum of its proper divisors (966956684).

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

725217492 is a wasteful number, since it uses less digits than its factorization.

725217492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60434798 (or 60434796 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 725217492 is about 26929.8624578738. The cubic root of 725217492 is about 898.4407123749.

The spelling of 725217492 in words is "seven hundred twenty-five million, two hundred seventeen thousand, four hundred ninety-two".