25425279 has 16 divisors (see below), whose sum is σ = 41091840. Its totient is φ = 15409080.

The previous prime is 25425277. The next prime is 25425293. The reversal of 25425279 is 97252452.

It is a happy number.

It is not a de Polignac number, because 25425279 - 2¹ = 25425277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25425271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42507 + ... + 43100.

It is an arithmetic number, because the mean of its divisors is an integer number (2568240).

Almost surely, 2^25425279 is an apocalyptic number.

25425279 is a deficient number, since it is larger than the sum of its proper divisors (15666561).

25425279 is a wasteful number, since it uses less digits than its factorization.

25425279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85627 (or 85621 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 25425279 is about 5042.3485599470. The cubic root of 25425279 is about 294.0504911200.

The spelling of 25425279 in words is "twenty-five million, four hundred twenty-five thousand, two hundred seventy-nine".