25255215 has 24 divisors (see below), whose sum is σ = 44710848. Its totient is φ = 13181760.

The previous prime is 25255213. The next prime is 25255247. The reversal of 25255215 is 51255252.

It is not a de Polignac number, because 25255215 - 2¹ = 25255213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25255213) 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 23 ways as a sum of consecutive naturals, for example, 3856 + ... + 8085.

It is an arithmetic number, because the mean of its divisors is an integer number (1862952).

Almost surely, 2^25255215 is an apocalyptic number.

25255215 is a deficient number, since it is larger than the sum of its proper divisors (19455633).

25255215 is a wasteful number, since it uses less digits than its factorization.

25255215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11999 (or 11996 counting only the distinct ones).

The product of its digits is 5000, while the sum is 27.

The square root of 25255215 is about 5025.4566956646. The cubic root of 25255215 is about 293.3934112769.

The spelling of 25255215 in words is "twenty-five million, two hundred fifty-five thousand, two hundred fifteen".