725881431 has 16 divisors (see below), whose sum is σ = 1057419648. Its totient is φ = 439264800.

The previous prime is 725881421. The next prime is 725881441. The reversal of 725881431 is 134188527.

It is an interprime number because it is at equal distance from previous prime (725881421) and next prime (725881441).

It is not a de Polignac number, because 725881431 - 2⁶ = 725881367 is a prime.

It is a super-2 number, since 2×725881431² = 1053807703741215522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 725881431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725881411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6096 + ... + 38586.

It is an arithmetic number, because the mean of its divisors is an integer number (66088728).

Almost surely, 2^725881431 is an apocalyptic number.

725881431 is a deficient number, since it is larger than the sum of its proper divisors (331538217).

725881431 is a wasteful number, since it uses less digits than its factorization.

725881431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33182.

The product of its digits is 53760, while the sum is 39.

The square root of 725881431 is about 26942.1868266108. The cubic root of 725881431 is about 898.7148038907.

The spelling of 725881431 in words is "seven hundred twenty-five million, eight hundred eighty-one thousand, four hundred thirty-one".