25285207 has 4 divisors (see below), whose sum is σ = 25302376. Its totient is φ = 25268040.

The previous prime is 25285189. The next prime is 25285213. The reversal of 25285207 is 70258252.

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 25285207 - 2¹⁵ = 25252439 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 (25285237) 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, 6144 + ... + 9397.

It is an arithmetic number, because the mean of its divisors is an integer number (6325594).

Almost surely, 2^25285207 is an apocalyptic number.

25285207 is a deficient number, since it is larger than the sum of its proper divisors (17169).

25285207 is a wasteful number, since it uses less digits than its factorization.

25285207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17168.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 25285207 is about 5028.4398176770. The cubic root of 25285207 is about 293.5095057707.

The spelling of 25285207 in words is "twenty-five million, two hundred eighty-five thousand, two hundred seven".