25213242 has 32 divisors (see below), whose sum is σ = 51492672. Its totient is φ = 8228864.

The previous prime is 25213241. The next prime is 25213271. The reversal of 25213242 is 24231252.

It is not an unprimeable number, because it can be changed into a prime (25213241) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 97978 + ... + 98234.

It is an arithmetic number, because the mean of its divisors is an integer number (1609146).

Almost surely, 2^25213242 is an apocalyptic number.

25213242 is an abundant number, since it is smaller than the sum of its proper divisors (26279430).

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

25213242 is a wasteful number, since it uses less digits than its factorization.

25213242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542.

The product of its digits is 960, while the sum is 21.

The square root of 25213242 is about 5021.2789207532. The cubic root of 25213242 is about 293.2307857221.

Adding to 25213242 its reverse (24231252), we get a palindrome (49444494).

The spelling of 25213242 in words is "twenty-five million, two hundred thirteen thousand, two hundred forty-two".