25266915 has 24 divisors (see below), whose sum is σ = 43990128. Its totient is φ = 13416000.

The previous prime is 25266883. The next prime is 25266919. The reversal of 25266915 is 51966252.

It is not a de Polignac number, because 25266915 - 2⁵ = 25266883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25266915.

It is not an unprimeable number, because it can be changed into a prime (25266919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10177 + ... + 12413.

It is an arithmetic number, because the mean of its divisors is an integer number (1832922).

Almost surely, 2^25266915 is an apocalyptic number.

25266915 is a deficient number, since it is larger than the sum of its proper divisors (18723213).

25266915 is a wasteful number, since it uses less digits than its factorization.

25266915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499 (or 2496 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 25266915 is about 5026.6206341836. The cubic root of 25266915 is about 293.4387111349.

The spelling of 25266915 in words is "twenty-five million, two hundred sixty-six thousand, nine hundred fifteen".