25157442 has 16 divisors (see below), whose sum is σ = 52050240. Its totient is φ = 8096592.

The previous prime is 25157411. The next prime is 25157443. The reversal of 25157442 is 24475152.

It is not an unprimeable number, because it can be changed into a prime (25157443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72118 + ... + 72465.

It is an arithmetic number, because the mean of its divisors is an integer number (3253140).

Almost surely, 2^25157442 is an apocalyptic number.

25157442 is an abundant number, since it is smaller than the sum of its proper divisors (26892798).

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

25157442 is a wasteful number, since it uses less digits than its factorization.

25157442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144617.

The product of its digits is 11200, while the sum is 30.

The square root of 25157442 is about 5015.7194897642. The cubic root of 25157442 is about 293.0143073694.

The spelling of 25157442 in words is "twenty-five million, one hundred fifty-seven thousand, four hundred forty-two".