25565262131 has 2 divisors, whose sum is σ = 25565262132. Its totient is φ = 25565262130.

The previous prime is 25565262119. The next prime is 25565262143. The reversal of 25565262131 is 13126256552.

It is a balanced prime because it is at equal distance from previous prime (25565262119) and next prime (25565262143).

It is a cyclic number.

It is not a de Polignac number, because 25565262131 - 2⁶ = 25565262067 is a prime.

It is a super-3 number, since 3×25565262131³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (25565262731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12782631065 + 12782631066.

It is an arithmetic number, because the mean of its divisors is an integer number (12782631066).

Almost surely, 2^25565262131 is an apocalyptic number.

25565262131 is a deficient number, since it is larger than the sum of its proper divisors (1).

25565262131 is an equidigital number, since it uses as much as digits as its factorization.

25565262131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 38.

The spelling of 25565262131 in words is "twenty-five billion, five hundred sixty-five million, two hundred sixty-two thousand, one hundred thirty-one".