725081 has 4 divisors (see below), whose sum is σ = 828672. Its totient is φ = 621492.

The previous prime is 725077. The next prime is 725099. The reversal of 725081 is 180527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 725081 - 2² = 725077 is a prime.

It is a super-2 number, since 2×725081² = 1051484913122, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 725081.

It is not an unprimeable number, because it can be changed into a prime (725041) 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, 51785 + ... + 51798.

It is an arithmetic number, because the mean of its divisors is an integer number (207168).

2⁷²⁵⁰⁸¹ is an apocalyptic number.

It is an amenable number.

725081 is a deficient number, since it is larger than the sum of its proper divisors (103591).

725081 is a wasteful number, since it uses less digits than its factorization.

725081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103590.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 725081 is about 851.5168818056. The cubic root of 725081 is about 89.8384344152.

The spelling of 725081 in words is "seven hundred twenty-five thousand, eighty-one".