25269679469 has 2 divisors, whose sum is σ = 25269679470. Its totient is φ = 25269679468.

The previous prime is 25269679441. The next prime is 25269679549. The reversal of 25269679469 is 96497696252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19366062244 + 5903617225 = 139162^2 + 76835^2 .

It is a cyclic number.

It is not a de Polignac number, because 25269679469 - 2¹² = 25269675373 is a prime.

It is a super-2 number, since 2×25269679469² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25269679069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12634839734 + 12634839735.

It is an arithmetic number, because the mean of its divisors is an integer number (12634839735).

Almost surely, 2^25269679469 is an apocalyptic number.

It is an amenable number.

25269679469 is a deficient number, since it is larger than the sum of its proper divisors (1).

25269679469 is an equidigital number, since it uses as much as digits as its factorization.

25269679469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88179840, while the sum is 65.

The spelling of 25269679469 in words is "twenty-five billion, two hundred sixty-nine million, six hundred seventy-nine thousand, four hundred sixty-nine".