25275273979 has 2 divisors, whose sum is σ = 25275273980. Its totient is φ = 25275273978.

The previous prime is 25275273971. The next prime is 25275273997. The reversal of 25275273979 is 97937257252.

Together with next prime (25275273997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25275273979 - 2³ = 25275273971 is a prime.

It is not a weakly prime, because it can be changed into another prime (25275273971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12637636989 + 12637636990.

It is an arithmetic number, because the mean of its divisors is an integer number (12637636990).

Almost surely, 2^25275273979 is an apocalyptic number.

25275273979 is a deficient number, since it is larger than the sum of its proper divisors (1).

25275273979 is an equidigital number, since it uses as much as digits as its factorization.

25275273979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16669800, while the sum is 58.

The spelling of 25275273979 in words is "twenty-five billion, two hundred seventy-five million, two hundred seventy-three thousand, nine hundred seventy-nine".