25085222479 has 2 divisors, whose sum is σ = 25085222480. Its totient is φ = 25085222478.

The previous prime is 25085222453. The next prime is 25085222507. The reversal of 25085222479 is 97422258052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25085222479 - 2²⁹ = 24548351567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25085222429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12542611239 + 12542611240.

It is an arithmetic number, because the mean of its divisors is an integer number (12542611240).

Almost surely, 2^25085222479 is an apocalyptic number.

25085222479 is a deficient number, since it is larger than the sum of its proper divisors (1).

25085222479 is an equidigital number, since it uses as much as digits as its factorization.

25085222479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 25085222479 in words is "twenty-five billion, eighty-five million, two hundred twenty-two thousand, four hundred seventy-nine".