25255632405 has 32 divisors (see below), whose sum is σ = 40549662720. Its totient is φ = 13422866240.

The previous prime is 25255632403. The next prime is 25255632449. The reversal of 25255632405 is 50423655252.

It is not a de Polignac number, because 25255632405 - 2¹ = 25255632403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25255632403) 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, 7517116 + ... + 7520474.

It is an arithmetic number, because the mean of its divisors is an integer number (1267176960).

Almost surely, 2^25255632405 is an apocalyptic number.

It is an amenable number.

25255632405 is a deficient number, since it is larger than the sum of its proper divisors (15294030315).

25255632405 is a wasteful number, since it uses less digits than its factorization.

25255632405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4961.

The product of its (nonzero) digits is 360000, while the sum is 39.

The spelling of 25255632405 in words is "twenty-five billion, two hundred fifty-five million, six hundred thirty-two thousand, four hundred five".