80840025 has 72 divisors (see below), whose sum is σ = 171697344. Its totient is φ = 36936000.

The previous prime is 80839991. The next prime is 80840027. The reversal of 80840025 is 52004808.

It is not a de Polignac number, because 80840025 - 2⁸ = 80839769 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (80840027) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 41575 + ... + 43475.

Almost surely, 2^80840025 is an apocalyptic number.

It is an amenable number.

80840025 is an abundant number, since it is smaller than the sum of its proper divisors (90857319).

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

80840025 is a wasteful number, since it uses less digits than its factorization.

80840025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933 (or 1916 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 80840025 is about 8991.1081074582. The cubic root of 80840025 is about 432.3898390736.

The spelling of 80840025 in words is "eighty million, eight hundred forty thousand, twenty-five".