55198425 has 12 divisors (see below), whose sum is σ = 91261520. Its totient is φ = 29439120.

The previous prime is 55198417. The next prime is 55198441. The reversal of 55198425 is 52489155.

It is not a de Polignac number, because 55198425 - 2³ = 55198417 is a prime.

It is a super-2 number, since 2×55198425² = 6093732244961250, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 367915 + ... + 368064.

Almost surely, 2^55198425 is an apocalyptic number.

It is an amenable number.

55198425 is a deficient number, since it is larger than the sum of its proper divisors (36063095).

55198425 is a wasteful number, since it uses less digits than its factorization.

55198425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735992 (or 735987 counting only the distinct ones).

The product of its digits is 72000, while the sum is 39.

The square root of 55198425 is about 7429.5642537096. The cubic root of 55198425 is about 380.7520310409.

The spelling of 55198425 in words is "fifty-five million, one hundred ninety-eight thousand, four hundred twenty-five".