25231115 has 32 divisors (see below), whose sum is σ = 38900736. Its totient is φ = 15269760.

The previous prime is 25231103. The next prime is 25231121. The reversal of 25231115 is 51113252.

It is a happy number.

It is not a de Polignac number, because 25231115 - 2⁶ = 25231051 is a prime.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 9260 + ... + 11670.

It is an arithmetic number, because the mean of its divisors is an integer number (1215648).

Almost surely, 2^25231115 is an apocalyptic number.

25231115 is a deficient number, since it is larger than the sum of its proper divisors (13669621).

25231115 is a wasteful number, since it uses less digits than its factorization.

25231115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459.

The product of its digits is 300, while the sum is 20.

The square root of 25231115 is about 5023.0583313356. The cubic root of 25231115 is about 293.3000572044.

Adding to 25231115 its reverse (51113252), we get a palindrome (76344367).

The spelling of 25231115 in words is "twenty-five million, two hundred thirty-one thousand, one hundred fifteen".