25025215 has 8 divisors (see below), whose sum is σ = 30999168. Its totient is φ = 19374240.

The previous prime is 25025213. The next prime is 25025251. The reversal of 25025215 is 51252052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25025215 - 2¹ = 25025213 is a prime.

It is a super-2 number, since 2×25025215² = 1252522771592450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25025213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80572 + ... + 80881.

It is an arithmetic number, because the mean of its divisors is an integer number (3874896).

Almost surely, 2^25025215 is an apocalyptic number.

25025215 is a deficient number, since it is larger than the sum of its proper divisors (5973953).

25025215 is a wasteful number, since it uses less digits than its factorization.

25025215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161489.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 25025215 is about 5002.5208645242. The cubic root of 25025215 is about 292.5000462659.

Adding to 25025215 its reverse (51252052), we get a palindrome (76277267).

The spelling of 25025215 in words is "twenty-five million, twenty-five thousand, two hundred fifteen".