725718715031 has 4 divisors (see below), whose sum is σ = 725750830632. Its totient is φ = 725686599432.

The previous prime is 725718714997. The next prime is 725718715039. The reversal of 725718715031 is 130517817527.

725718715031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725718715031 is a prime.

It is a super-2 number, since 2×725718715031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725718715039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16023881 + ... + 16069106.

It is an arithmetic number, because the mean of its divisors is an integer number (181437707658).

Almost surely, 2^725718715031 is an apocalyptic number.

725718715031 is a deficient number, since it is larger than the sum of its proper divisors (32115601).

725718715031 is a wasteful number, since it uses less digits than its factorization.

725718715031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32115600.

The product of its (nonzero) digits is 411600, while the sum is 47.

The spelling of 725718715031 in words is "seven hundred twenty-five billion, seven hundred eighteen million, seven hundred fifteen thousand, thirty-one".