55785425 has 12 divisors (see below), whose sum is σ = 72815280. Its totient is φ = 42279120.

The previous prime is 55785403. The next prime is 55785479. The reversal of 55785425 is 52458755.

It is not a de Polignac number, because 55785425 - 2²² = 51591121 is a prime.

It is a super-2 number, since 2×55785425² = 6224027284861250, which contains 22 as substring.

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, 58247 + ... + 59196.

It is an arithmetic number, because the mean of its divisors is an integer number (6067940).

Almost surely, 2^55785425 is an apocalyptic number.

It is an amenable number.

55785425 is a deficient number, since it is larger than the sum of its proper divisors (17029855).

55785425 is a wasteful number, since it uses less digits than its factorization.

55785425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117472 (or 117467 counting only the distinct ones).

The product of its digits is 280000, while the sum is 41.

The square root of 55785425 is about 7468.9641182697. The cubic root of 55785425 is about 382.0969596624.

The spelling of 55785425 in words is "fifty-five million, seven hundred eighty-five thousand, four hundred twenty-five".