25423000079 has 2 divisors, whose sum is σ = 25423000080. Its totient is φ = 25423000078.

The previous prime is 25423000039. The next prime is 25423000139. The reversal of 25423000079 is 97000032452.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25423000079 is a prime.

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 (25423000019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12711500039 + 12711500040.

It is an arithmetic number, because the mean of its divisors is an integer number (12711500040).

Almost surely, 2^25423000079 is an apocalyptic number.

25423000079 is a deficient number, since it is larger than the sum of its proper divisors (1).

25423000079 is an equidigital number, since it uses as much as digits as its factorization.

25423000079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 32.

The spelling of 25423000079 in words is "twenty-five billion, four hundred twenty-three million, seventy-nine", and thus it is an aban number.