55532331225 has 144 divisors (see below), whose sum is σ = 119952144000. Its totient is φ = 23990722560.

The previous prime is 55532331193. The next prime is 55532331271. The reversal of 55532331225 is 52213323555.

55532331225 is a `hidden beast` number, since 55 + 53 + 2 + 331 + 225 = 666.

It is not a de Polignac number, because 55532331225 - 2⁵ = 55532331193 is a prime.

It is a super-2 number, since 2×55532331225² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55532331225.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 13434259 + ... + 13438391.

It is an arithmetic number, because the mean of its divisors is an integer number (833001000).

Almost surely, 2^55532331225 is an apocalyptic number.

It is an amenable number.

55532331225 is an abundant number, since it is smaller than the sum of its proper divisors (64419812775).

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

55532331225 is a wasteful number, since it uses less digits than its factorization.

55532331225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4624 (or 4616 counting only the distinct ones).

The product of its digits is 135000, while the sum is 36.

The spelling of 55532331225 in words is "fifty-five billion, five hundred thirty-two million, three hundred thirty-one thousand, two hundred twenty-five".