25566312445 has 16 divisors (see below), whose sum is σ = 30935399040. Its totient is φ = 20283134400.

The previous prime is 25566312439. The next prime is 25566312481. The reversal of 25566312445 is 54421366552.

It is not a de Polignac number, because 25566312445 - 2³ = 25566312437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285550 + ... + 364240.

It is an arithmetic number, because the mean of its divisors is an integer number (1933462440).

Almost surely, 2^25566312445 is an apocalyptic number.

It is an amenable number.

25566312445 is a deficient number, since it is larger than the sum of its proper divisors (5369086595).

25566312445 is a wasteful number, since it uses less digits than its factorization.

25566312445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79236.

The product of its digits is 864000, while the sum is 43.

Adding to 25566312445 its reverse (54421366552), we get a palindrome (79987678997).

The spelling of 25566312445 in words is "twenty-five billion, five hundred sixty-six million, three hundred twelve thousand, four hundred forty-five".