25129842 has 16 divisors (see below), whose sum is σ = 53216352. Its totient is φ = 7883840.

The previous prime is 25129829. The next prime is 25129849. The reversal of 25129842 is 24892152.

It is not an unprimeable number, because it can be changed into a prime (25129849) 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, 123084 + ... + 123287.

It is an arithmetic number, because the mean of its divisors is an integer number (3326022).

Almost surely, 2^25129842 is an apocalyptic number.

25129842 is an abundant number, since it is smaller than the sum of its proper divisors (28086510).

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

25129842 is a wasteful number, since it uses less digits than its factorization.

25129842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246393.

The product of its digits is 11520, while the sum is 33.

The square root of 25129842 is about 5012.9673846934. The cubic root of 25129842 is about 292.9071137187.

The spelling of 25129842 in words is "twenty-five million, one hundred twenty-nine thousand, eight hundred forty-two".