55698360025 has 81 divisors (see below), whose sum is σ = 88454145213. Its totient is φ = 34664414400.

The previous prime is 55698360017. The next prime is 55698360043. The reversal of 55698360025 is 52006389655.

The square root of 55698360025 is 236005.

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

It can be written as a sum of positive squares in 4 ways, for example, as 32548128921 + 23150231104 = 180411^2 + 152152^2 .

It is not a de Polignac number, because 55698360025 - 2³ = 55698360017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 90861619 + ... + 90862231.

Almost surely, 2^55698360025 is an apocalyptic number.

55698360025 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55698360025 is the 236005-th square number.

55698360025 is the 118003-rd centered octagonal number.

It is an amenable number.

55698360025 is a deficient number, since it is larger than the sum of its proper divisors (32755785188).

55698360025 is an equidigital number, since it uses as much as digits as its factorization.

55698360025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 49.

Multiplying 55698360025 by its sum of digits (49), we get a square (2729219641225 = 1652035²).

55698360025 divided by its sum of digits (49) gives a square (1136701225 = 33715²).

The spelling of 55698360025 in words is "fifty-five billion, six hundred ninety-eight million, three hundred sixty thousand, twenty-five".