25505267 has 4 divisors (see below), whose sum is σ = 25534176. Its totient is φ = 25476360.

The previous prime is 25505261. The next prime is 25505273. The reversal of 25505267 is 76250552.

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

It is an interprime number because it is at equal distance from previous prime (25505261) and next prime (25505273).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25505267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25505261) 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, 13088 + ... + 14909.

It is an arithmetic number, because the mean of its divisors is an integer number (6383544).

Almost surely, 2^25505267 is an apocalyptic number.

25505267 is a deficient number, since it is larger than the sum of its proper divisors (28909).

25505267 is an equidigital number, since it uses as much as digits as its factorization.

25505267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28908.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 25505267 is about 5050.2739529653. The cubic root of 25505267 is about 294.3585295425.

The spelling of 25505267 in words is "twenty-five million, five hundred five thousand, two hundred sixty-seven".