25751242 has 8 divisors (see below), whose sum is σ = 42138432. Its totient is φ = 11705100.

The previous prime is 25751221. The next prime is 25751267. The reversal of 25751242 is 24215752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 25751242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 585234 + ... + 585277.

It is an arithmetic number, because the mean of its divisors is an integer number (5267304).

Almost surely, 2^25751242 is an apocalyptic number.

25751242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25751242 is a deficient number, since it is larger than the sum of its proper divisors (16387190).

25751242 is a wasteful number, since it uses less digits than its factorization.

25751242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170524.

The product of its digits is 5600, while the sum is 28.

The square root of 25751242 is about 5074.5681589668. The cubic root of 25751242 is about 295.3017767931.

Adding to 25751242 its reverse (24215752), we get a palindrome (49966994).

The spelling of 25751242 in words is "twenty-five million, seven hundred fifty-one thousand, two hundred forty-two".