25555252757553 has 12 divisors (see below), whose sum is σ = 39084504217668. Its totient is φ = 16034668396800.

The previous prime is 25555252757533. The next prime is 25555252757561. The reversal of 25555252757553 is 35575725255552.

It is a happy number.

25555252757553 is a `hidden beast` number, since 2 + 5 + 5 + 5 + 5 + 2 + 5 + 2 + 7 + 575 + 53 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 23523353607744 + 2031899149809 = 4850088^2 + 1425447^2 .

It is not a de Polignac number, because 25555252757553 - 2⁸ = 25555252757297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25555252757533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83513897748 + ... + 83513898053.

It is an arithmetic number, because the mean of its divisors is an integer number (3257042018139).

Almost surely, 2^{25555252757553} is an apocalyptic number.

It is an amenable number.

25555252757553 is a deficient number, since it is larger than the sum of its proper divisors (13529251460115).

25555252757553 is a wasteful number, since it uses less digits than its factorization.

25555252757553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167027795824 (or 167027795821 counting only the distinct ones).

The product of its digits is 459375000, while the sum is 63.

The spelling of 25555252757553 in words is "twenty-five trillion, five hundred fifty-five billion, two hundred fifty-two million, seven hundred fifty-seven thousand, five hundred fifty-three".