25195321234 has 8 divisors (see below), whose sum is σ = 37803611520. Its totient is φ = 12594117396.

The previous prime is 25195321231. The next prime is 25195321247. The reversal of 25195321234 is 43212359152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 25195321193 and 25195321202.

It is not an unprimeable number, because it can be changed into a prime (25195321231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1762714 + ... + 1776949.

It is an arithmetic number, because the mean of its divisors is an integer number (4725451440).

Almost surely, 2^25195321234 is an apocalyptic number.

25195321234 is a deficient number, since it is larger than the sum of its proper divisors (12608290286).

25195321234 is a wasteful number, since it uses less digits than its factorization.

25195321234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543224.

The product of its digits is 64800, while the sum is 37.

The spelling of 25195321234 in words is "twenty-five billion, one hundred ninety-five million, three hundred twenty-one thousand, two hundred thirty-four".