55012259850625 has 135 divisors (see below), whose sum is σ = 87920121401343. Its totient is φ = 34284456360000.

The previous prime is 55012259850623. The next prime is 55012259850679. The reversal of 55012259850625 is 52605895221055.

It is a happy number.

The square root of 55012259850625 is 7417025.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 7587385939441 + 47424873911184 = 2754521^2 + 6886572^2 .

It is not a de Polignac number, because 55012259850625 - 2¹ = 55012259850623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is not an unprimeable number, because it can be changed into a prime (55012259850623) by changing a digit.

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 134 ways as a sum of consecutive naturals, for example, 14277771199 + ... + 14277775051.

Almost surely, 2^{55012259850625} is an apocalyptic number.

55012259850625 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55012259850625 is the 7417025-th square number.

55012259850625 is the 3708513-rd centered octagonal number.

It is an amenable number.

55012259850625 is a deficient number, since it is larger than the sum of its proper divisors (32907861550718).

55012259850625 is an frugal number, since it uses more digits than its factorization.

55012259850625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7762 (or 3876 counting only the distinct ones).

The product of its (nonzero) digits is 10800000, while the sum is 55.

The spelling of 55012259850625 in words is "fifty-five trillion, twelve billion, two hundred fifty-nine million, eight hundred fifty thousand, six hundred twenty-five".