80172525280 has 48 divisors (see below), whose sum is σ = 190193606064. Its totient is φ = 31935928320.

The previous prime is 80172525269. The next prime is 80172525341. The reversal of 80172525280 is 8252527108.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1001022 + ... + 1078141.

It is an arithmetic number, because the mean of its divisors is an integer number (3962366793).

Almost surely, 2^80172525280 is an apocalyptic number.

80172525280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80172525280 is an abundant number, since it is smaller than the sum of its proper divisors (110021080784).

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

80172525280 is a wasteful number, since it uses less digits than its factorization.

80172525280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2079419 (or 2079411 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 40.

The spelling of 80172525280 in words is "eighty billion, one hundred seventy-two million, five hundred twenty-five thousand, two hundred eighty".