25872142 has 4 divisors (see below), whose sum is σ = 38808216. Its totient is φ = 12936070.

The previous prime is 25872127. The next prime is 25872157. The reversal of 25872142 is 24127852.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (25872127) and next prime (25872157).

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6468034 + ... + 6468037.

It is an arithmetic number, because the mean of its divisors is an integer number (9702054).

Almost surely, 2^25872142 is an apocalyptic number.

25872142 is a deficient number, since it is larger than the sum of its proper divisors (12936074).

25872142 is a wasteful number, since it uses less digits than its factorization.

25872142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12936073.

The product of its digits is 8960, while the sum is 31.

The square root of 25872142 is about 5086.4665535124. The cubic root of 25872142 is about 295.7631947633.

Adding to 25872142 its reverse (24127852), we get a palindrome (49999994).

The spelling of 25872142 in words is "twenty-five million, eight hundred seventy-two thousand, one hundred forty-two".