25249242 has 32 divisors (see below), whose sum is σ = 51782400. Its totient is φ = 8205120.

The previous prime is 25249241. The next prime is 25249243. The reversal of 25249242 is 24294252.

It is an interprime number because it is at equal distance from previous prime (25249241) and next prime (25249243).

It is not an unprimeable number, because it can be changed into a prime (25249241) 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, 54303 + ... + 54765.

It is an arithmetic number, because the mean of its divisors is an integer number (1618200).

Almost surely, 2^25249242 is an apocalyptic number.

25249242 is an abundant number, since it is smaller than the sum of its proper divisors (26533158).

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

25249242 is a wasteful number, since it uses less digits than its factorization.

25249242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678.

The product of its digits is 11520, while the sum is 30.

The square root of 25249242 is about 5024.8623861754. The cubic root of 25249242 is about 293.3702797241.

It can be divided in two parts, 252 and 49242, that added together give a palindrome (49494).

The spelling of 25249242 in words is "twenty-five million, two hundred forty-nine thousand, two hundred forty-two".