80998525 has 12 divisors (see below), whose sum is σ = 104805792. Its totient is φ = 61981040.

The previous prime is 80998517. The next prime is 80998529. The reversal of 80998525 is 52589908.

It is not a de Polignac number, because 80998525 - 2³ = 80998517 is a prime.

It is a super-2 number, since 2×80998525² = 13121522104351250, 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 (80998529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69859 + ... + 71008.

It is an arithmetic number, because the mean of its divisors is an integer number (8733816).

Almost surely, 2^80998525 is an apocalyptic number.

It is an amenable number.

80998525 is a deficient number, since it is larger than the sum of its proper divisors (23807267).

80998525 is a wasteful number, since it uses less digits than its factorization.

80998525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140900 (or 140895 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 46.

The square root of 80998525 is about 8999.9180551825. The cubic root of 80998525 is about 432.6722447576.

The spelling of 80998525 in words is "eighty million, nine hundred ninety-eight thousand, five hundred twenty-five".