25464536551 has 8 divisors (see below), whose sum is σ = 25550609760. Its totient is φ = 25378526208.

The previous prime is 25464536431. The next prime is 25464536557. The reversal of 25464536551 is 15563546452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25464536551 - 2²⁵ = 25430982119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25464536557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 881190 + ... + 909628.

It is an arithmetic number, because the mean of its divisors is an integer number (3193826220).

Almost surely, 2^25464536551 is an apocalyptic number.

25464536551 is a deficient number, since it is larger than the sum of its proper divisors (86073209).

25464536551 is a wasteful number, since it uses less digits than its factorization.

25464536551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31433.

The product of its digits is 2160000, while the sum is 46.

Subtracting from 25464536551 its reverse (15563546452), we obtain a palindrome (9900990099).

The spelling of 25464536551 in words is "twenty-five billion, four hundred sixty-four million, five hundred thirty-six thousand, five hundred fifty-one".