25251242 has 8 divisors (see below), whose sum is σ = 38900676. Its totient is φ = 12284352.

The previous prime is 25251227. The next prime is 25251287. The reversal of 25251242 is 24215252.

It can be written as a sum of positive squares in 2 ways, for example, as 24492601 + 758641 = 4949^2 + 871^2 .

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, 170543 + ... + 170690.

Almost surely, 2^25251242 is an apocalyptic number.

25251242 is a deficient number, since it is larger than the sum of its proper divisors (13649434).

25251242 is a wasteful number, since it uses less digits than its factorization.

25251242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341272.

The product of its digits is 1600, while the sum is 23.

The square root of 25251242 is about 5025.0613926598. The cubic root of 25251242 is about 293.3780255021.

Adding to 25251242 its reverse (24215252), we get a palindrome (49466494).

The spelling of 25251242 in words is "twenty-five million, two hundred fifty-one thousand, two hundred forty-two".