80637625 has 16 divisors (see below), whose sum is σ = 102025872. Its totient is φ = 63619200.

The previous prime is 80637619. The next prime is 80637629. The reversal of 80637625 is 52673608.

It can be written as a sum of positive squares in 8 ways, for example, as 2862864 + 77774761 = 1692^2 + 8819^2 .

It is not a de Polignac number, because 80637625 - 2³ = 80637617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80637629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4707 + ... + 13543.

It is an arithmetic number, because the mean of its divisors is an integer number (6376617).

Almost surely, 2^80637625 is an apocalyptic number.

It is an amenable number.

80637625 is a deficient number, since it is larger than the sum of its proper divisors (21388247).

80637625 is an equidigital number, since it uses as much as digits as its factorization.

80637625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8925 (or 8915 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 80637625 is about 8979.8454886485. The cubic root of 80637625 is about 432.0286778659.

The spelling of 80637625 in words is "eighty million, six hundred thirty-seven thousand, six hundred twenty-five".