725811103 has 4 divisors (see below), whose sum is σ = 728288568. Its totient is φ = 723333640.

The previous prime is 725811071. The next prime is 725811131. The reversal of 725811103 is 301118527.

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

It is a cyclic number.

It is not a de Polignac number, because 725811103 - 2⁵ = 725811071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725811193) 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, 1238293 + ... + 1238878.

It is an arithmetic number, because the mean of its divisors is an integer number (182072142).

Almost surely, 2^725811103 is an apocalyptic number.

725811103 is a deficient number, since it is larger than the sum of its proper divisors (2477465).

725811103 is a wasteful number, since it uses less digits than its factorization.

725811103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2477464.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 725811103 is about 26940.8816299690. The cubic root of 725811103 is about 898.6857785553.

The spelling of 725811103 in words is "seven hundred twenty-five million, eight hundred eleven thousand, one hundred three".