25500142 has 4 divisors (see below), whose sum is σ = 38250216. Its totient is φ = 12750070.

The previous prime is 25500131. The next prime is 25500149. The reversal of 25500142 is 24100552.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25500149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6375034 + ... + 6375037.

It is an arithmetic number, because the mean of its divisors is an integer number (9562554).

Almost surely, 2^25500142 is an apocalyptic number.

25500142 is a deficient number, since it is larger than the sum of its proper divisors (12750074).

25500142 is a wasteful number, since it uses less digits than its factorization.

25500142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12750073.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 25500142 is about 5049.7665292566. The cubic root of 25500142 is about 294.3388121965.

Adding to 25500142 its reverse (24100552), we get a palindrome (49600694).

The spelling of 25500142 in words is "twenty-five million, five hundred thousand, one hundred forty-two".