25252642 has 16 divisors (see below), whose sum is σ = 38491200. Its totient is φ = 12424048.

The previous prime is 25252639. The next prime is 25252663. The reversal of 25252642 is 24625252.

It is a self number, because there is not a number n which added to its sum of digits gives 25252642.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41859 + ... + 42457.

It is an arithmetic number, because the mean of its divisors is an integer number (2405700).

Almost surely, 2^25252642 is an apocalyptic number.

25252642 is a deficient number, since it is larger than the sum of its proper divisors (13238558).

25252642 is a wasteful number, since it uses less digits than its factorization.

25252642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905.

The product of its digits is 9600, while the sum is 28.

The square root of 25252642 is about 5025.2006925097. The cubic root of 25252642 is about 293.3834473034.

Adding to 25252642 its reverse (24625252), we get a palindrome (49877894).

The spelling of 25252642 in words is "twenty-five million, two hundred fifty-two thousand, six hundred forty-two".