55256025 has 24 divisors (see below), whose sum is σ = 99663264. Its totient is φ = 26790400.

The previous prime is 55256023. The next prime is 55256029. The reversal of 55256025 is 52065255.

It is not a de Polignac number, because 55256025 - 2¹ = 55256023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55255983 and 55256001.

It is not an unprimeable number, because it can be changed into a prime (55256021) 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, 32664 + ... + 34313.

It is an arithmetic number, because the mean of its divisors is an integer number (4152636).

Almost surely, 2^55256025 is an apocalyptic number.

55256025 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55256025 is a deficient number, since it is larger than the sum of its proper divisors (44407239).

55256025 is a wasteful number, since it uses less digits than its factorization.

55256025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67001 (or 66996 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 55256025 is about 7433.4396479692. The cubic root of 55256025 is about 380.8844242683.

The spelling of 55256025 in words is "fifty-five million, two hundred fifty-six thousand, twenty-five".