25388348431 has 2 divisors, whose sum is σ = 25388348432. Its totient is φ = 25388348430.

The previous prime is 25388348399. The next prime is 25388348441. The reversal of 25388348431 is 13484388352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25388348431 - 2⁵ = 25388348399 is a prime.

It is a super-2 number, since 2×25388348431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25388348441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12694174215 + 12694174216.

It is an arithmetic number, because the mean of its divisors is an integer number (12694174216).

Almost surely, 2^25388348431 is an apocalyptic number.

25388348431 is a deficient number, since it is larger than the sum of its proper divisors (1).

25388348431 is an equidigital number, since it uses as much as digits as its factorization.

25388348431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2211840, while the sum is 49.

The spelling of 25388348431 in words is "twenty-five billion, three hundred eighty-eight million, three hundred forty-eight thousand, four hundred thirty-one".