25105242 has 32 divisors (see below), whose sum is σ = 52329600. Its totient is φ = 8019648.

The previous prime is 25105219. The next prime is 25105261. The reversal of 25105242 is 24250152.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26859 + ... + 27777.

It is an arithmetic number, because the mean of its divisors is an integer number (1635300).

Almost surely, 2^25105242 is an apocalyptic number.

25105242 is an abundant number, since it is smaller than the sum of its proper divisors (27224358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25105242 is a wasteful number, since it uses less digits than its factorization.

25105242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 25105242 is about 5010.5131473732. The cubic root of 25105242 is about 292.8115053782.

Adding to 25105242 its reverse (24250152), we get a palindrome (49355394).

The spelling of 25105242 in words is "twenty-five million, one hundred five thousand, two hundred forty-two".