25190915 has 16 divisors (see below), whose sum is σ = 30947616. Its totient is φ = 19680000.

The previous prime is 25190897. The next prime is 25190917. The reversal of 25190915 is 51909152.

It is not a de Polignac number, because 25190915 - 2²² = 20996611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25190917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41615 + ... + 42215.

It is an arithmetic number, because the mean of its divisors is an integer number (1934226).

Almost surely, 2^25190915 is an apocalyptic number.

25190915 is a deficient number, since it is larger than the sum of its proper divisors (5756701).

25190915 is a wasteful number, since it uses less digits than its factorization.

25190915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790.

The product of its (nonzero) digits is 4050, while the sum is 32.

The square root of 25190915 is about 5019.0551899735. The cubic root of 25190915 is about 293.1442055934.

The spelling of 25190915 in words is "twenty-five million, one hundred ninety thousand, nine hundred fifteen".