80138025 has 96 divisors (see below), whose sum is σ = 164989440. Its totient is φ = 37800000.

The previous prime is 80138021. The next prime is 80138033. The reversal of 80138025 is 52083108.

It is a happy number.

It is not a de Polignac number, because 80138025 - 2² = 80138021 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 80138025.

It is not an unprimeable number, because it can be changed into a prime (80138021) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 319150 + ... + 319400.

It is an arithmetic number, because the mean of its divisors is an integer number (1718640).

Almost surely, 2^80138025 is an apocalyptic number.

It is an amenable number.

80138025 is an abundant number, since it is smaller than the sum of its proper divisors (84851415).

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

80138025 is a wasteful number, since it uses less digits than its factorization.

80138025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 313 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 80138025 is about 8951.9844168765. The cubic root of 80138025 is about 431.1346005026.

The spelling of 80138025 in words is "eighty million, one hundred thirty-eight thousand, twenty-five".