725363928391 has 4 divisors (see below), whose sum is σ = 725368101832. Its totient is φ = 725359754952.

The previous prime is 725363928353. The next prime is 725363928403. The reversal of 725363928391 is 193829363527.

725363928391 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 not a de Polignac number, because 725363928391 - 2¹³ = 725363920199 is a prime.

It is a super-2 number, since 2×725363928391² (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 (725363923391) 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, 1814145 + ... + 2177578.

It is an arithmetic number, because the mean of its divisors is an integer number (181342025458).

Almost surely, 2^725363928391 is an apocalyptic number.

725363928391 is a deficient number, since it is larger than the sum of its proper divisors (4173441).

725363928391 is a wasteful number, since it uses less digits than its factorization.

725363928391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4173440.

The product of its digits is 14696640, while the sum is 58.

The spelling of 725363928391 in words is "seven hundred twenty-five billion, three hundred sixty-three million, nine hundred twenty-eight thousand, three hundred ninety-one".