55377855625 has 15 divisors (see below), whose sum is σ = 69207520723. Its totient is φ = 44297578000.

The previous prime is 55377855607. The next prime is 55377855629. The reversal of 55377855625 is 52655877355.

The square root of 55377855625 is 235325.

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 5647071609 + 49730784016 = 75147^2 + 223004^2 .

It is not a de Polignac number, because 55377855625 - 2⁷ = 55377855497 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 55377855625.

It is not an unprimeable number, because it can be changed into a prime (55377855629) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 5878419 + ... + 5887831.

Almost surely, 2^55377855625 is an apocalyptic number.

55377855625 is the 235325-th square number.

55377855625 is the 117663-rd centered octagonal number.

It is an amenable number.

55377855625 is a deficient number, since it is larger than the sum of its proper divisors (13829665098).

55377855625 is an frugal number, since it uses more digits than its factorization.

55377855625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18846 (or 9418 counting only the distinct ones).

The product of its digits is 44100000, while the sum is 58.

The spelling of 55377855625 in words is "fifty-five billion, three hundred seventy-seven million, eight hundred fifty-five thousand, six hundred twenty-five".