55825825 has 24 divisors (see below), whose sum is σ = 77289696. Its totient is φ = 39648000.

The previous prime is 55825817. The next prime is 55825843. The reversal of 55825825 is 52852855.

It is a happy number.

It is not a de Polignac number, because 55825825 - 2³ = 55825817 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9465 + ... + 14185.

It is an arithmetic number, because the mean of its divisors is an integer number (3220404).

Almost surely, 2^55825825 is an apocalyptic number.

55825825 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55825825 is a deficient number, since it is larger than the sum of its proper divisors (21463871).

55825825 is a wasteful number, since it uses less digits than its factorization.

55825825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4785 (or 4780 counting only the distinct ones).

The product of its digits is 160000, while the sum is 40.

The square root of 55825825 is about 7471.6681537659. The cubic root of 55825825 is about 382.1891760566.

The spelling of 55825825 in words is "fifty-five million, eight hundred twenty-five thousand, eight hundred twenty-five".