25262205439 has 2 divisors, whose sum is σ = 25262205440. Its totient is φ = 25262205438.

The previous prime is 25262205431. The next prime is 25262205467. The reversal of 25262205439 is 93450226252.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25262205439 - 2³ = 25262205431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25262205431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12631102719 + 12631102720.

It is an arithmetic number, because the mean of its divisors is an integer number (12631102720).

Almost surely, 2^25262205439 is an apocalyptic number.

25262205439 is a deficient number, since it is larger than the sum of its proper divisors (1).

25262205439 is an equidigital number, since it uses as much as digits as its factorization.

25262205439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 25262205439 in words is "twenty-five billion, two hundred sixty-two million, two hundred five thousand, four hundred thirty-nine".