25565652873 has 12 divisors (see below), whose sum is σ = 38201550660. Its totient is φ = 16456052256.

The previous prime is 25565652859. The next prime is 25565652913. The reversal of 25565652873 is 37825656552.

It is a happy number.

25565652873 is a `hidden beast` number, since 2 + 5 + 5 + 6 + 565 + 2 + 8 + 73 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16000226064 + 9565426809 = 126492^2 + 97803^2 .

It is not a de Polignac number, because 25565652873 - 2⁵ = 25565652841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25565652823) 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, 48976086 + ... + 48976607.

It is an arithmetic number, because the mean of its divisors is an integer number (3183462555).

Almost surely, 2^25565652873 is an apocalyptic number.

It is an amenable number.

25565652873 is a deficient number, since it is larger than the sum of its proper divisors (12635897787).

25565652873 is a wasteful number, since it uses less digits than its factorization.

25565652873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97952728 (or 97952725 counting only the distinct ones).

The product of its digits is 15120000, while the sum is 54.

The spelling of 25565652873 in words is "twenty-five billion, five hundred sixty-five million, six hundred fifty-two thousand, eight hundred seventy-three".