25252649231 has 2 divisors, whose sum is σ = 25252649232. Its totient is φ = 25252649230.

The previous prime is 25252649207. The next prime is 25252649263. The reversal of 25252649231 is 13294625252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25252649231 - 2³⁴ = 8072780047 is a prime.

It is a super-2 number, since 2×25252649231² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25252649281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12626324615 + 12626324616.

It is an arithmetic number, because the mean of its divisors is an integer number (12626324616).

Almost surely, 2^25252649231 is an apocalyptic number.

25252649231 is a deficient number, since it is larger than the sum of its proper divisors (1).

25252649231 is an equidigital number, since it uses as much as digits as its factorization.

25252649231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 41.

The spelling of 25252649231 in words is "twenty-five billion, two hundred fifty-two million, six hundred forty-nine thousand, two hundred thirty-one".