725074091 has 4 divisors (see below), whose sum is σ = 828656112. Its totient is φ = 621492072.

The previous prime is 725074061. The next prime is 725074151. The reversal of 725074091 is 190470527.

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-725074091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725074061) 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, 51791000 + ... + 51791013.

It is an arithmetic number, because the mean of its divisors is an integer number (207164028).

Almost surely, 2^725074091 is an apocalyptic number.

725074091 is a deficient number, since it is larger than the sum of its proper divisors (103582021).

725074091 is a wasteful number, since it uses less digits than its factorization.

725074091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103582020.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 725074091 is about 26927.1998358537. The cubic root of 725074091 is about 898.3814906973.

The spelling of 725074091 in words is "seven hundred twenty-five million, seventy-four thousand, ninety-one".