25023396929 has 6 divisors (see below), whose sum is σ = 26409735090. Its totient is φ = 23706375696.

The previous prime is 25023396919. The next prime is 25023396971. The reversal of 25023396929 is 92969332052.

It can be written as a sum of positive squares in only one way, i.e., 24971268529 + 52128400 = 158023^2 + 7220^2 .

It is not a de Polignac number, because 25023396929 - 2¹² = 25023392833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25023396919) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34658084 + ... + 34658805.

It is an arithmetic number, because the mean of its divisors is an integer number (4401622515).

Almost surely, 2^25023396929 is an apocalyptic number.

It is an amenable number.

25023396929 is a deficient number, since it is larger than the sum of its proper divisors (1386338161).

25023396929 is an equidigital number, since it uses as much as digits as its factorization.

25023396929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69316927 (or 69316908 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 50.

The spelling of 25023396929 in words is "twenty-five billion, twenty-three million, three hundred ninety-six thousand, nine hundred twenty-nine".