25517252289 has 16 divisors (see below), whose sum is σ = 34095427200. Its totient is φ = 16975330176.

The previous prime is 25517252261. The next prime is 25517252291. The reversal of 25517252289 is 98225271552.

It is not a de Polignac number, because 25517252289 - 2⁹ = 25517251777 is a prime.

It is a super-2 number, since 2×25517252289² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25517252489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3158347 + ... + 3166415.

It is an arithmetic number, because the mean of its divisors is an integer number (2130964200).

Almost surely, 2^25517252289 is an apocalyptic number.

It is an amenable number.

25517252289 is a deficient number, since it is larger than the sum of its proper divisors (8578174911).

25517252289 is a wasteful number, since it uses less digits than its factorization.

25517252289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10184.

The product of its digits is 1008000, while the sum is 48.

The spelling of 25517252289 in words is "twenty-five billion, five hundred seventeen million, two hundred fifty-two thousand, two hundred eighty-nine".