80642925 has 48 divisors (see below), whose sum is σ = 161626560. Its totient is φ = 39096000.

The previous prime is 80642867. The next prime is 80642957. The reversal of 80642925 is 52924608.

It is a happy number.

80642925 is a `hidden beast` number, since 8 + 0 + 642 + 9 + 2 + 5 = 666.

It is not a de Polignac number, because 80642925 - 2⁹ = 80642413 is a prime.

It is a super-3 number, since 3×80642925³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80642925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1995 + ... + 12855.

It is an arithmetic number, because the mean of its divisors is an integer number (3367220).

Almost surely, 2^80642925 is an apocalyptic number.

It is an amenable number.

80642925 is an abundant number, since it is smaller than the sum of its proper divisors (80983635).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80642925 is a wasteful number, since it uses less digits than its factorization.

80642925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10891 (or 10880 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 80642925 is about 8980.1405890999. The cubic root of 80642925 is about 432.0381428513.

The spelling of 80642925 in words is "eighty million, six hundred forty-two thousand, nine hundred twenty-five".