725242239 has 6 divisors (see below), whose sum is σ = 1047572136. Its totient is φ = 483494820.

The previous prime is 725242229. The next prime is 725242247. The reversal of 725242239 is 932242527.

It is not a de Polignac number, because 725242239 - 2⁴ = 725242223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725242229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40291227 + ... + 40291244.

It is an arithmetic number, because the mean of its divisors is an integer number (174595356).

Almost surely, 2^725242239 is an apocalyptic number.

725242239 is a deficient number, since it is larger than the sum of its proper divisors (322329897).

725242239 is a wasteful number, since it uses less digits than its factorization.

725242239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80582477 (or 80582474 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 725242239 is about 26930.3219252945. The cubic root of 725242239 is about 898.4509315894.

The spelling of 725242239 in words is "seven hundred twenty-five million, two hundred forty-two thousand, two hundred thirty-nine".