25131432422 has 8 divisors (see below), whose sum is σ = 38997050400. Its totient is φ = 12132415624.

The previous prime is 25131432419. The next prime is 25131432467. The reversal of 25131432422 is 22423413152.

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

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216650222 + ... + 216650337.

It is an arithmetic number, because the mean of its divisors is an integer number (4874631300).

Almost surely, 2^25131432422 is an apocalyptic number.

25131432422 is a deficient number, since it is larger than the sum of its proper divisors (13865617978).

25131432422 is a wasteful number, since it uses less digits than its factorization.

25131432422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433300590.

The product of its digits is 11520, while the sum is 29.

Adding to 25131432422 its reverse (22423413152), we get a palindrome (47554845574).

The spelling of 25131432422 in words is "twenty-five billion, one hundred thirty-one million, four hundred thirty-two thousand, four hundred twenty-two".