25215875 has 16 divisors (see below), whose sum is σ = 31994976. Its totient is φ = 19836000.

The previous prime is 25215871. The next prime is 25215881. The reversal of 25215875 is 57851252.

It is not a de Polignac number, because 25215875 - 2² = 25215871 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (25215871) 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, 5972 + ... + 9278.

It is an arithmetic number, because the mean of its divisors is an integer number (1999686).

Almost surely, 2^25215875 is an apocalyptic number.

25215875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25215875 is a deficient number, since it is larger than the sum of its proper divisors (6779101).

25215875 is an equidigital number, since it uses as much as digits as its factorization.

25215875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3383 (or 3373 counting only the distinct ones).

The product of its digits is 28000, while the sum is 35.

The square root of 25215875 is about 5021.5410981092. The cubic root of 25215875 is about 293.2409926573.

The spelling of 25215875 in words is "twenty-five million, two hundred fifteen thousand, eight hundred seventy-five".