55437625 has 8 divisors (see below), whose sum is σ = 69186312. Its totient is φ = 44350000.

The previous prime is 55437601. The next prime is 55437631. The reversal of 55437625 is 52673455.

It can be written as a sum of positive squares in 4 ways, for example, as 15848361 + 39589264 = 3981^2 + 6292^2 .

It is not a de Polignac number, because 55437625 - 2⁹ = 55437113 is a prime.

It is a Duffinian 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, 221626 + ... + 221875.

It is an arithmetic number, because the mean of its divisors is an integer number (8648289).

Almost surely, 2^55437625 is an apocalyptic number.

It is an amenable number.

55437625 is a deficient number, since it is larger than the sum of its proper divisors (13748687).

55437625 is an equidigital number, since it uses as much as digits as its factorization.

55437625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443516 (or 443506 counting only the distinct ones).

The product of its digits is 126000, while the sum is 37.

The square root of 55437625 is about 7445.6447000915. The cubic root of 55437625 is about 381.3012293427.

The spelling of 55437625 in words is "fifty-five million, four hundred thirty-seven thousand, six hundred twenty-five".