25967215 has 4 divisors (see below), whose sum is σ = 31160664. Its totient is φ = 20773768.

The previous prime is 25967203. The next prime is 25967219. The reversal of 25967215 is 51276952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25967215 - 2¹⁹ = 25442927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25967219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2596717 + ... + 2596726.

It is an arithmetic number, because the mean of its divisors is an integer number (7790166).

Almost surely, 2^25967215 is an apocalyptic number.

25967215 is a deficient number, since it is larger than the sum of its proper divisors (5193449).

25967215 is an equidigital number, since it uses as much as digits as its factorization.

25967215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5193448.

The product of its digits is 37800, while the sum is 37.

The square root of 25967215 is about 5095.8036657626. The cubic root of 25967215 is about 296.1250346792.

The spelling of 25967215 in words is "twenty-five million, nine hundred sixty-seven thousand, two hundred fifteen".