25021142 has 8 divisors (see below), whose sum is σ = 38826000. Its totient is φ = 12079144.

The previous prime is 25021103. The next prime is 25021151. The reversal of 25021142 is 24112052.

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 25021142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215642 + ... + 215757.

It is an arithmetic number, because the mean of its divisors is an integer number (4853250).

Almost surely, 2^25021142 is an apocalyptic number.

25021142 is a deficient number, since it is larger than the sum of its proper divisors (13804858).

25021142 is a wasteful number, since it uses less digits than its factorization.

25021142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431430.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 25021142 is about 5002.1137532047. The cubic root of 25021142 is about 292.4841767075.

Adding to 25021142 its reverse (24112052), we get a palindrome (49133194).

The spelling of 25021142 in words is "twenty-five million, twenty-one thousand, one hundred forty-two".