25355015205 has 32 divisors (see below), whose sum is σ = 44754232320. Its totient is φ = 12178014720.

The previous prime is 25355015167. The next prime is 25355015209. The reversal of 25355015205 is 50251055352.

It is not a de Polignac number, because 25355015205 - 2¹⁷ = 25354884133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25355015209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1577685 + ... + 1593674.

It is an arithmetic number, because the mean of its divisors is an integer number (1398569760).

Almost surely, 2^25355015205 is an apocalyptic number.

It is an amenable number.

25355015205 is a deficient number, since it is larger than the sum of its proper divisors (19399217115).

25355015205 is a wasteful number, since it uses less digits than its factorization.

25355015205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171421.

The product of its (nonzero) digits is 37500, while the sum is 33.

The spelling of 25355015205 in words is "twenty-five billion, three hundred fifty-five million, fifteen thousand, two hundred five".