55418025 has 48 divisors (see below), whose sum is σ = 99743616. Its totient is φ = 26987520.

The previous prime is 55418009. The next prime is 55418053. The reversal of 55418025 is 52081455.

It is not a de Polignac number, because 55418025 - 2⁴ = 55418009 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55417983 and 55418001.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 109924 + ... + 110426.

It is an arithmetic number, because the mean of its divisors is an integer number (2077992).

Almost surely, 2^55418025 is an apocalyptic number.

It is an amenable number.

55418025 is a deficient number, since it is larger than the sum of its proper divisors (44325591).

55418025 is a wasteful number, since it uses less digits than its factorization.

55418025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 55418025 is about 7444.3283780338. The cubic root of 55418025 is about 381.2562876326.

The spelling of 55418025 in words is "fifty-five million, four hundred eighteen thousand, twenty-five".