25522170945 has 64 divisors (see below), whose sum is σ = 44244787200. Its totient is φ = 12522781440.

The previous prime is 25522170943. The next prime is 25522170959. The reversal of 25522170945 is 54907122552.

It is not a de Polignac number, because 25522170945 - 2¹ = 25522170943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25522170897 and 25522170906.

It is not an unprimeable number, because it can be changed into a prime (25522170943) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1364124 + ... + 1382706.

It is an arithmetic number, because the mean of its divisors is an integer number (691324800).

Almost surely, 2^25522170945 is an apocalyptic number.

It is an amenable number.

25522170945 is a deficient number, since it is larger than the sum of its proper divisors (18722616255).

25522170945 is a wasteful number, since it uses less digits than its factorization.

25522170945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18750.

The product of its (nonzero) digits is 252000, while the sum is 42.

The spelling of 25522170945 in words is "twenty-five billion, five hundred twenty-two million, one hundred seventy thousand, nine hundred forty-five".