25642115 has 16 divisors (see below), whose sum is σ = 33438720. Its totient is φ = 18804960.

The previous prime is 25642109. The next prime is 25642117. The reversal of 25642115 is 51124652.

It is not a de Polignac number, because 25642115 - 2⁶ = 25642051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25642117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1409 + ... + 7298.

It is an arithmetic number, because the mean of its divisors is an integer number (2089920).

Almost surely, 2^25642115 is an apocalyptic number.

25642115 is a deficient number, since it is larger than the sum of its proper divisors (7796605).

25642115 is a wasteful number, since it uses less digits than its factorization.

25642115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8762.

The product of its digits is 2400, while the sum is 26.

The square root of 25642115 is about 5063.8043998559. The cubic root of 25642115 is about 294.8840490398.

Adding to 25642115 its reverse (51124652), we get a palindrome (76766767).

The spelling of 25642115 in words is "twenty-five million, six hundred forty-two thousand, one hundred fifteen".