25285267 has 4 divisors (see below), whose sum is σ = 28897456. Its totient is φ = 21673080.

The previous prime is 25285241. The next prime is 25285279. The reversal of 25285267 is 76258252.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25285267 is a prime.

It is a super-2 number, since 2×25285267² = 1278689454522578, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25285237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1806084 + ... + 1806097.

It is an arithmetic number, because the mean of its divisors is an integer number (7224364).

Almost surely, 2^25285267 is an apocalyptic number.

25285267 is a deficient number, since it is larger than the sum of its proper divisors (3612189).

25285267 is an equidigital number, since it uses as much as digits as its factorization.

25285267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3612188.

The product of its digits is 67200, while the sum is 37.

The square root of 25285267 is about 5028.4457837387. The cubic root of 25285267 is about 293.5097379296.

It can be divided in two parts, 25285 and 267, that added together give a palindrome (25552).

The spelling of 25285267 in words is "twenty-five million, two hundred eighty-five thousand, two hundred sixty-seven".