989031725 has 24 divisors (see below), whose sum is σ = 1370537280. Its totient is φ = 701744000.

The previous prime is 989031721. The next prime is 989031739. The reversal of 989031725 is 527130989.

It is not a de Polignac number, because 989031725 - 2² = 989031721 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989031721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32585 + ... + 55134.

It is an arithmetic number, because the mean of its divisors is an integer number (57105720).

Almost surely, 2^989031725 is an apocalyptic number.

It is an amenable number.

989031725 is a deficient number, since it is larger than the sum of its proper divisors (381505555).

989031725 is a wasteful number, since it uses less digits than its factorization.

989031725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87781 (or 87776 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 989031725 is about 31448.8747811428. The cubic root of 989031725 is about 996.3304592750.

The spelling of 989031725 in words is "nine hundred eighty-nine million, thirty-one thousand, seven hundred twenty-five".