25056215 has 32 divisors (see below), whose sum is σ = 33882624. Its totient is φ = 17694720.

The previous prime is 25056209. The next prime is 25056253. The reversal of 25056215 is 51265052.

It is not a de Polignac number, because 25056215 - 2⁶ = 25056151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97367 + ... + 97623.

It is an arithmetic number, because the mean of its divisors is an integer number (1058832).

Almost surely, 2^25056215 is an apocalyptic number.

25056215 is a deficient number, since it is larger than the sum of its proper divisors (8826409).

25056215 is a wasteful number, since it uses less digits than its factorization.

25056215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 25056215 is about 5005.6183434217. The cubic root of 25056215 is about 292.6207746310.

It can be divided in two parts, 250 and 56215, that added together give a palindrome (56465).

The spelling of 25056215 in words is "twenty-five million, fifty-six thousand, two hundred fifteen".