55252725 has 24 divisors (see below), whose sum is σ = 99657312. Its totient is φ = 26788800.

The previous prime is 55252711. The next prime is 55252753. The reversal of 55252725 is 52725255.

It is not a de Polignac number, because 55252725 - 2⁶ = 55252661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32662 + ... + 34311.

It is an arithmetic number, because the mean of its divisors is an integer number (4152388).

Almost surely, 2^55252725 is an apocalyptic number.

55252725 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55252725 is a deficient number, since it is larger than the sum of its proper divisors (44404587).

55252725 is a wasteful number, since it uses less digits than its factorization.

55252725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66997 (or 66992 counting only the distinct ones).

The product of its digits is 35000, while the sum is 33.

The square root of 55252725 is about 7433.2176747355. The cubic root of 55252725 is about 380.8768417249.

The spelling of 55252725 in words is "fifty-five million, two hundred fifty-two thousand, seven hundred twenty-five".