55486158025 has 9 divisors (see below), whose sum is σ = 68804296423. Its totient is φ = 44387984200.

The previous prime is 55486157971. The next prime is 55486158031. The reversal of 55486158025 is 52085168455.

The square root of 55486158025 is 235555.

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

It can be written as a sum of positive squares in only one way, i.e., 19975016889 + 35511141136 = 141333^2 + 188444^2 .

It is a de Polignac number, because none of the positive numbers 2^k-55486158025 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55486158025.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1154220 + ... + 1201330.

Almost surely, 2^55486158025 is an apocalyptic number.

55486158025 is the 235555-th square number.

55486158025 is the 117778-th centered octagonal number.

It is an amenable number.

55486158025 is a deficient number, since it is larger than the sum of its proper divisors (13318138398).

55486158025 is an frugal number, since it uses more digits than its factorization.

55486158025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94232 (or 47116 counting only the distinct ones).

The product of its (nonzero) digits is 1920000, while the sum is 49.

Multiplying 55486158025 by its sum of digits (49), we get a square (2718821743225 = 1648885²).

The spelling of 55486158025 in words is "fifty-five billion, four hundred eighty-six million, one hundred fifty-eight thousand, twenty-five".