25263291929 has 2 divisors, whose sum is σ = 25263291930. Its totient is φ = 25263291928.

The previous prime is 25263291883. The next prime is 25263291941. The reversal of 25263291929 is 92919236252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25253977225 + 9314704 = 158915^2 + 3052^2 .

It is a cyclic number.

It is not a de Polignac number, because 25263291929 - 2²⁸ = 24994856473 is a prime.

It is not a weakly prime, because it can be changed into another prime (25263291629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12631645964 + 12631645965.

It is an arithmetic number, because the mean of its divisors is an integer number (12631645965).

Almost surely, 2^25263291929 is an apocalyptic number.

It is an amenable number.

25263291929 is a deficient number, since it is larger than the sum of its proper divisors (1).

25263291929 is an equidigital number, since it uses as much as digits as its factorization.

25263291929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1049760, while the sum is 50.

The spelling of 25263291929 in words is "twenty-five billion, two hundred sixty-three million, two hundred ninety-one thousand, nine hundred twenty-nine".