25269516465 has 16 divisors (see below), whose sum is σ = 42809534208. Its totient is φ = 12684306176.

The previous prime is 25269516443. The next prime is 25269516529. The reversal of 25269516465 is 56461596252.

It is a cyclic number.

It is not a de Polignac number, because 25269516465 - 2¹⁵ = 25269483697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49547817 + ... + 49548326.

It is an arithmetic number, because the mean of its divisors is an integer number (2675595888).

Almost surely, 2^25269516465 is an apocalyptic number.

It is an amenable number.

25269516465 is a deficient number, since it is larger than the sum of its proper divisors (17540017743).

25269516465 is a wasteful number, since it uses less digits than its factorization.

25269516465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99096168.

The product of its digits is 3888000, while the sum is 51.

The spelling of 25269516465 in words is "twenty-five billion, two hundred sixty-nine million, five hundred sixteen thousand, four hundred sixty-five".