55135825 has 12 divisors (see below), whose sum is σ = 70574848. Its totient is φ = 42685200.

The previous prime is 55135823. The next prime is 55135837. The reversal of 55135825 is 52853155.

It is not a de Polignac number, because 55135825 - 2¹ = 55135823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55135823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34797 + ... + 36346.

Almost surely, 2^55135825 is an apocalyptic number.

It is an amenable number.

55135825 is a deficient number, since it is larger than the sum of its proper divisors (15439023).

55135825 is a wasteful number, since it uses less digits than its factorization.

55135825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71184 (or 71179 counting only the distinct ones).

The product of its digits is 30000, while the sum is 34.

The square root of 55135825 is about 7425.3501600935. The cubic root of 55135825 is about 380.6080408624.

The spelling of 55135825 in words is "fifty-five million, one hundred thirty-five thousand, eight hundred twenty-five".