55624425 has 24 divisors (see below), whose sum is σ = 97377696. Its totient is φ = 27920640.

The previous prime is 55624421. The next prime is 55624427. The reversal of 55624425 is 52442655.

It is not a de Polignac number, because 55624425 - 2² = 55624421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55624421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20539 + ... + 23088.

It is an arithmetic number, because the mean of its divisors is an integer number (4057404).

Almost surely, 2^55624425 is an apocalyptic number.

It is an amenable number.

55624425 is a deficient number, since it is larger than the sum of its proper divisors (41753271).

55624425 is a wasteful number, since it uses less digits than its factorization.

55624425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43657 (or 43652 counting only the distinct ones).

The product of its digits is 48000, while the sum is 33.

The square root of 55624425 is about 7458.1783969009. The cubic root of 55624425 is about 381.7290207446.

The spelling of 55624425 in words is "fifty-five million, six hundred twenty-four thousand, four hundred twenty-five".