55192725 has 48 divisors (see below), whose sum is σ = 115885440. Its totient is φ = 25228800.

The previous prime is 55192717. The next prime is 55192751. The reversal of 55192725 is 52729155.

It is not a de Polignac number, because 55192725 - 2³ = 55192717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55192725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1116 + ... + 10565.

It is an arithmetic number, because the mean of its divisors is an integer number (2414280).

Almost surely, 2^55192725 is an apocalyptic number.

It is an amenable number.

55192725 is an abundant number, since it is smaller than the sum of its proper divisors (60692715).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55192725 is a wasteful number, since it uses less digits than its factorization.

55192725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11707 (or 11696 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

The square root of 55192725 is about 7429.1806412282. The cubic root of 55192725 is about 380.7389246205.

The spelling of 55192725 in words is "fifty-five million, one hundred ninety-two thousand, seven hundred twenty-five".