25664453269 has 32 divisors (see below), whose sum is σ = 32066935040. Its totient is φ = 19998254592.

The previous prime is 25664453233. The next prime is 25664453273. The reversal of 25664453269 is 96235446652.

It is a cyclic number.

It is not a de Polignac number, because 25664453269 - 2⁹ = 25664452757 is a prime.

It is a super-2 number, since 2×25664453269² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25664453279) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5225587 + ... + 5230495.

It is an arithmetic number, because the mean of its divisors is an integer number (1002091720).

Almost surely, 2^25664453269 is an apocalyptic number.

It is an amenable number.

25664453269 is a deficient number, since it is larger than the sum of its proper divisors (6402481771).

25664453269 is a wasteful number, since it uses less digits than its factorization.

25664453269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5789.

The product of its digits is 9331200, while the sum is 52.

The spelling of 25664453269 in words is "twenty-five billion, six hundred sixty-four million, four hundred fifty-three thousand, two hundred sixty-nine".