55122250425 has 96 divisors (see below), whose sum is σ = 105263262720. Its totient is φ = 25171718400.

The previous prime is 55122250397. The next prime is 55122250427. The reversal of 55122250425 is 52405222155.

It is a happy number.

It is not a de Polignac number, because 55122250425 - 2⁷ = 55122250297 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (55122250427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2701612 + ... + 2721938.

It is an arithmetic number, because the mean of its divisors is an integer number (1096492320).

Almost surely, 2^55122250425 is an apocalyptic number.

55122250425 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55122250425 is a deficient number, since it is larger than the sum of its proper divisors (50141012295).

55122250425 is a wasteful number, since it uses less digits than its factorization.

55122250425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20543 (or 20538 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 33.

The spelling of 55122250425 in words is "fifty-five billion, one hundred twenty-two million, two hundred fifty thousand, four hundred twenty-five".