80557825 has 12 divisors (see below), whose sum is σ = 102329388. Its totient is φ = 62873600.

The previous prime is 80557823. The next prime is 80557837. The reversal of 80557825 is 52875508.

It can be written as a sum of positive squares in 6 ways, for example, as 14753281 + 65804544 = 3841^2 + 8112^2 .

It is not a de Polignac number, because 80557825 - 2¹ = 80557823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80557823) 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, 38272 + ... + 40321.

It is an arithmetic number, because the mean of its divisors is an integer number (8527449).

Almost surely, 2^80557825 is an apocalyptic number.

It is an amenable number.

80557825 is a deficient number, since it is larger than the sum of its proper divisors (21771563).

80557825 is a wasteful number, since it uses less digits than its factorization.

80557825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78644 (or 78639 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 40.

The square root of 80557825 is about 8975.4011052432. The cubic root of 80557825 is about 431.8861171719.

The spelling of 80557825 in words is "eighty million, five hundred fifty-seven thousand, eight hundred twenty-five".