80637125 has 8 divisors (see below), whose sum is σ = 100635288. Its totient is φ = 64509600.

The previous prime is 80637079. The next prime is 80637127. The reversal of 80637125 is 52173608.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10647169 + 69989956 = 3263^2 + 8366^2 .

It is not a de Polignac number, because 80637125 - 2²⁶ = 13528261 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80637091 and 80637100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80637127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322424 + ... + 322673.

It is an arithmetic number, because the mean of its divisors is an integer number (12579411).

Almost surely, 2^80637125 is an apocalyptic number.

It is an amenable number.

80637125 is a deficient number, since it is larger than the sum of its proper divisors (19998163).

80637125 is an equidigital number, since it uses as much as digits as its factorization.

80637125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645112 (or 645102 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 80637125 is about 8979.8176484826. The cubic root of 80637125 is about 432.0277849213.

The spelling of 80637125 in words is "eighty million, six hundred thirty-seven thousand, one hundred twenty-five".