725245531 has 8 divisors (see below), whose sum is σ = 742523904. Its totient is φ = 708141120.

The previous prime is 725245513. The next prime is 725245537. The reversal of 725245531 is 135542527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 725245531 - 2⁹ = 725245019 is a prime.

It is a super-2 number, since 2×725245531² = 1051962160470943922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725245537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35035 + ... + 51748.

It is an arithmetic number, because the mean of its divisors is an integer number (92815488).

Almost surely, 2^725245531 is an apocalyptic number.

725245531 is a deficient number, since it is larger than the sum of its proper divisors (17278373).

725245531 is a wasteful number, since it uses less digits than its factorization.

725245531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86981.

The product of its digits is 42000, while the sum is 34.

The square root of 725245531 is about 26930.3830459205. The cubic root of 725245531 is about 898.4522909954.

The spelling of 725245531 in words is "seven hundred twenty-five million, two hundred forty-five thousand, five hundred thirty-one".