25437637079 has 2 divisors, whose sum is σ = 25437637080. Its totient is φ = 25437637078.

The previous prime is 25437637063. The next prime is 25437637097. The reversal of 25437637079 is 97073673452.

Together with next prime (25437637097) 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 25437637079 - 2⁴ = 25437637063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25437637079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25437637009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12718818539 + 12718818540.

It is an arithmetic number, because the mean of its divisors is an integer number (12718818540).

Almost surely, 2^25437637079 is an apocalyptic number.

25437637079 is a deficient number, since it is larger than the sum of its proper divisors (1).

25437637079 is an equidigital number, since it uses as much as digits as its factorization.

25437637079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6667920, while the sum is 53.

The spelling of 25437637079 in words is "twenty-five billion, four hundred thirty-seven million, six hundred thirty-seven thousand, seventy-nine".