25536240401551 has 16 divisors (see below), whose sum is σ = 28058628857760. Its totient is φ = 23047911659520.

The previous prime is 25536240401531. The next prime is 25536240401587. The reversal of 25536240401551 is 15510404263552.

It is not a de Polignac number, because 25536240401551 - 2⁵ = 25536240401519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25536240401498 and 25536240401507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25536240401521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13469790 + ... + 15248203.

It is an arithmetic number, because the mean of its divisors is an integer number (1753664303610).

Almost surely, 2^{25536240401551} is an apocalyptic number.

25536240401551 is a deficient number, since it is larger than the sum of its proper divisors (2522388456209).

25536240401551 is a wasteful number, since it uses less digits than its factorization.

25536240401551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28718586.

The product of its (nonzero) digits is 720000, while the sum is 43.

The spelling of 25536240401551 in words is "twenty-five trillion, five hundred thirty-six billion, two hundred forty million, four hundred one thousand, five hundred fifty-one".