25131142 has 8 divisors (see below), whose sum is σ = 38912832. Its totient is φ = 12160200.

The previous prime is 25131133. The next prime is 25131187. The reversal of 25131142 is 24113152.

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

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, 202609 + ... + 202732.

It is an arithmetic number, because the mean of its divisors is an integer number (4864104).

Almost surely, 2^25131142 is an apocalyptic number.

25131142 is a deficient number, since it is larger than the sum of its proper divisors (13781690).

25131142 is a wasteful number, since it uses less digits than its factorization.

25131142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405374.

The product of its digits is 240, while the sum is 19.

The square root of 25131142 is about 5013.0970467367. The cubic root of 25131142 is about 292.9121644559.

Adding to 25131142 its reverse (24113152), we get a palindrome (49244294).

It can be divided in two parts, 2513 and 1142, that added together give a triangular number (3655 = T₈₅).

The spelling of 25131142 in words is "twenty-five million, one hundred thirty-one thousand, one hundred forty-two".