725369988431 has 4 divisors (see below), whose sum is σ = 791312714664. Its totient is φ = 659427262200.

The previous prime is 725369988403. The next prime is 725369988437. The reversal of 725369988431 is 134889963527.

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 725369988431 - 2⁶ = 725369988367 is a prime.

It is a super-2 number, since 2×725369988431² (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 (725369988437) 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, 32971363100 + ... + 32971363121.

It is an arithmetic number, because the mean of its divisors is an integer number (197828178666).

Almost surely, 2^725369988431 is an apocalyptic number.

725369988431 is a deficient number, since it is larger than the sum of its proper divisors (65942726233).

725369988431 is a wasteful number, since it uses less digits than its factorization.

725369988431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65942726232.

The product of its digits is 78382080, while the sum is 65.

The spelling of 725369988431 in words is "seven hundred twenty-five billion, three hundred sixty-nine million, nine hundred eighty-eight thousand, four hundred thirty-one".