725108381 has 4 divisors (see below), whose sum is σ = 763272000. Its totient is φ = 686944764.

The previous prime is 725108357. The next prime is 725108387. The reversal of 725108381 is 183801527.

725108381 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725108381 is a prime.

It is a super-2 number, since 2×725108381² = 1051564328392882322, which 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 (725108387) 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, 19081781 + ... + 19081818.

It is an arithmetic number, because the mean of its divisors is an integer number (190818000).

Almost surely, 2^725108381 is an apocalyptic number.

It is an amenable number.

725108381 is a deficient number, since it is larger than the sum of its proper divisors (38163619).

725108381 is a wasteful number, since it uses less digits than its factorization.

725108381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38163618.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 725108381 is about 26927.8365451070. The cubic root of 725108381 is about 898.3956524757.

The spelling of 725108381 in words is "seven hundred twenty-five million, one hundred eight thousand, three hundred eighty-one".