25251442 has 8 divisors (see below), whose sum is σ = 37900800. Its totient is φ = 12617844.

The previous prime is 25251407. The next prime is 25251451. The reversal of 25251442 is 24415252.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1659 + ... + 7297.

It is an arithmetic number, because the mean of its divisors is an integer number (4737600).

Almost surely, 2^25251442 is an apocalyptic number.

25251442 is a deficient number, since it is larger than the sum of its proper divisors (12649358).

25251442 is a wasteful number, since it uses less digits than its factorization.

25251442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7880.

The product of its digits is 3200, while the sum is 25.

The square root of 25251442 is about 5025.0812928748. The cubic root of 25251442 is about 293.3788000574.

Adding to 25251442 its reverse (24415252), we get a palindrome (49666694).

The spelling of 25251442 in words is "twenty-five million, two hundred fifty-one thousand, four hundred forty-two".