25522915 has 16 divisors (see below), whose sum is σ = 33820416. Its totient is φ = 18335200.

The previous prime is 25522907. The next prime is 25522919. The reversal of 25522915 is 51922552.

It is not a de Polignac number, because 25522915 - 2³ = 25522907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25522919) 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 in 15 ways as a sum of consecutive naturals, for example, 1770 + ... + 7360.

It is an arithmetic number, because the mean of its divisors is an integer number (2113776).

Almost surely, 2^25522915 is an apocalyptic number.

25522915 is a deficient number, since it is larger than the sum of its proper divisors (8297501).

25522915 is a wasteful number, since it uses less digits than its factorization.

25522915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5690.

The product of its digits is 9000, while the sum is 31.

The square root of 25522915 is about 5052.0208827755. The cubic root of 25522915 is about 294.4264062628.

The spelling of 25522915 in words is "twenty-five million, five hundred twenty-two thousand, nine hundred fifteen".