25042142 has 16 divisors (see below), whose sum is σ = 38232864. Its totient is φ = 12300000.

The previous prime is 25042123. The next prime is 25042153. The reversal of 25042142 is 24124052.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30092 + ... + 30912.

It is an arithmetic number, because the mean of its divisors is an integer number (2389554).

Almost surely, 2^25042142 is an apocalyptic number.

25042142 is a deficient number, since it is larger than the sum of its proper divisors (13190722).

25042142 is a wasteful number, since it uses less digits than its factorization.

25042142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 25042142 is about 5004.2124255471. The cubic root of 25042142 is about 292.5659801967.

Adding to 25042142 its reverse (24124052), we get a palindrome (49166194).

The spelling of 25042142 in words is "twenty-five million, forty-two thousand, one hundred forty-two".