25079894745 has 16 divisors (see below), whose sum is σ = 40131165312. Its totient is φ = 13374832640.

The previous prime is 25079894717. The next prime is 25079894747. The reversal of 25079894745 is 54749897052.

It is not a de Polignac number, because 25079894745 - 2⁷ = 25079894617 is a prime.

It is a super-2 number, since 2×25079894745² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25079894747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136900 + ... + 262490.

It is an arithmetic number, because the mean of its divisors is an integer number (2508197832).

Almost surely, 2^25079894745 is an apocalyptic number.

It is an amenable number.

25079894745 is a deficient number, since it is larger than the sum of its proper divisors (15051270567).

25079894745 is a wasteful number, since it uses less digits than its factorization.

25079894745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138912.

The product of its (nonzero) digits is 25401600, while the sum is 60.

It can be divided in two parts, 250798 and 94745, that added together give a palindrome (345543).

The spelling of 25079894745 in words is "twenty-five billion, seventy-nine million, eight hundred ninety-four thousand, seven hundred forty-five".