25305531255 has 48 divisors (see below), whose sum is σ = 44065719360. Its totient is φ = 13434038784.

The previous prime is 25305531253. The next prime is 25305531269. The reversal of 25305531255 is 55213550352.

25305531255 is a `hidden beast` number, since 2 + 53 + 0 + 553 + 1 + 2 + 55 = 666.

It is not a de Polignac number, because 25305531255 - 2¹ = 25305531253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25305531253) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11840547 + ... + 11842683.

It is an arithmetic number, because the mean of its divisors is an integer number (918035820).

Almost surely, 2^25305531255 is an apocalyptic number.

25305531255 is a deficient number, since it is larger than the sum of its proper divisors (18760188105).

25305531255 is a wasteful number, since it uses less digits than its factorization.

25305531255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3240 (or 3237 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 36.

The spelling of 25305531255 in words is "twenty-five billion, three hundred five million, five hundred thirty-one thousand, two hundred fifty-five".