55135025 has 36 divisors (see below), whose sum is σ = 78172080. Its totient is φ = 38253600.

The previous prime is 55135007. The next prime is 55135027. The reversal of 55135025 is 52053155.

It is not a de Polignac number, because 55135025 - 2¹⁶ = 55069489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55134985 and 55135003.

It is not an unprimeable number, because it can be changed into a prime (55135027) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 145286 + ... + 145664.

Almost surely, 2^55135025 is an apocalyptic number.

55135025 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55135025 is a deficient number, since it is larger than the sum of its proper divisors (23037055).

55135025 is a wasteful number, since it uses less digits than its factorization.

55135025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 55135025 is about 7425.2962903846. The cubic root of 55135025 is about 380.6062000272.

The spelling of 55135025 in words is "fifty-five million, one hundred thirty-five thousand, twenty-five".