25131013097 has 2 divisors, whose sum is σ = 25131013098. Its totient is φ = 25131013096.

The previous prime is 25131012989. The next prime is 25131013109. The reversal of 25131013097 is 79031013152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19851682816 + 5279330281 = 140896^2 + 72659^2 .

It is a cyclic number.

It is not a de Polignac number, because 25131013097 - 2³⁴ = 7951143913 is a prime.

It is not a weakly prime, because it can be changed into another prime (25131003097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12565506548 + 12565506549.

It is an arithmetic number, because the mean of its divisors is an integer number (12565506549).

Almost surely, 2^25131013097 is an apocalyptic number.

It is an amenable number.

25131013097 is a deficient number, since it is larger than the sum of its proper divisors (1).

25131013097 is an equidigital number, since it uses as much as digits as its factorization.

25131013097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 32.

The spelling of 25131013097 in words is "twenty-five billion, one hundred thirty-one million, thirteen thousand, ninety-seven".