55775425 has 12 divisors (see below), whose sum is σ = 69438636. Its totient is φ = 44441600.

The previous prime is 55775413. The next prime is 55775509. The reversal of 55775425 is 52457755.

It can be written as a sum of positive squares in 6 ways, for example, as 7096896 + 48678529 = 2664^2 + 6977^2 .

It is not a de Polignac number, because 55775425 - 2⁷ = 55775297 is a prime.

It is a super-2 number, since 2×55775425² = 6221796067861250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 2085 + ... + 10765.

It is an arithmetic number, because the mean of its divisors is an integer number (5786553).

Almost surely, 2^55775425 is an apocalyptic number.

It is an amenable number.

55775425 is a deficient number, since it is larger than the sum of its proper divisors (13663211).

55775425 is a wasteful number, since it uses less digits than its factorization.

55775425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8948 (or 8943 counting only the distinct ones).

The product of its digits is 245000, while the sum is 40.

The square root of 55775425 is about 7468.2946513913. The cubic root of 55775425 is about 382.0741269486.

The spelling of 55775425 in words is "fifty-five million, seven hundred seventy-five thousand, four hundred twenty-five".