25945868162 has 4 divisors (see below), whose sum is σ = 38918802246. Its totient is φ = 12972934080.

The previous prime is 25945868149. The next prime is 25945868167. The reversal of 25945868162 is 26186854952.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17389433161 + 8556435001 = 131869^2 + 92501^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25945868098 and 25945868107.

It is not an unprimeable number, because it can be changed into a prime (25945868167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6486467039 + ... + 6486467042.

Almost surely, 2^25945868162 is an apocalyptic number.

25945868162 is a deficient number, since it is larger than the sum of its proper divisors (12972934084).

25945868162 is a wasteful number, since it uses less digits than its factorization.

25945868162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12972934083.

The product of its digits is 8294400, while the sum is 56.

The spelling of 25945868162 in words is "twenty-five billion, nine hundred forty-five million, eight hundred sixty-eight thousand, one hundred sixty-two".