55425725 has 6 divisors (see below), whose sum is σ = 68727930. Its totient is φ = 44340560.

The previous prime is 55425719. The next prime is 55425743. The reversal of 55425725 is 52752455.

It can be written as a sum of positive squares in 3 ways, for example, as 458329 + 54967396 = 677^2 + 7414^2 .

It is not a de Polignac number, because 55425725 - 2²⁴ = 38648509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1108490 + ... + 1108539.

It is an arithmetic number, because the mean of its divisors is an integer number (11454655).

Almost surely, 2^55425725 is an apocalyptic number.

It is an amenable number.

55425725 is a deficient number, since it is larger than the sum of its proper divisors (13302205).

55425725 is a wasteful number, since it uses less digits than its factorization.

55425725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2217039 (or 2217034 counting only the distinct ones).

The product of its digits is 70000, while the sum is 35.

The square root of 55425725 is about 7444.8455323129. The cubic root of 55425725 is about 381.2739445680.

The spelling of 55425725 in words is "fifty-five million, four hundred twenty-five thousand, seven hundred twenty-five".