25545795765 has 32 divisors (see below), whose sum is σ = 46718305536. Its totient is φ = 11676579840.

The previous prime is 25545795763. The next prime is 25545795809. The reversal of 25545795765 is 56759754552.

It is not a de Polignac number, because 25545795765 - 2¹ = 25545795763 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25545795699 and 25545795708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25545795763) 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, 1574595 + ... + 1590735.

It is an arithmetic number, because the mean of its divisors is an integer number (1459947048).

Almost surely, 2^25545795765 is an apocalyptic number.

It is an amenable number.

25545795765 is a deficient number, since it is larger than the sum of its proper divisors (21172509771).

25545795765 is a wasteful number, since it uses less digits than its factorization.

25545795765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31229.

The product of its digits is 66150000, while the sum is 60.

The spelling of 25545795765 in words is "twenty-five billion, five hundred forty-five million, seven hundred ninety-five thousand, seven hundred sixty-five".