25294279 has 4 divisors (see below), whose sum is σ = 25326280. Its totient is φ = 25262280.

The previous prime is 25294267. The next prime is 25294289. The reversal of 25294279 is 97249252.

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 25294279 - 2²¹ = 23197127 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 (25294229) 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, 14784 + ... + 16405.

It is an arithmetic number, because the mean of its divisors is an integer number (6331570).

Almost surely, 2^25294279 is an apocalyptic number.

25294279 is a deficient number, since it is larger than the sum of its proper divisors (32001).

25294279 is an equidigital number, since it uses as much as digits as its factorization.

25294279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32000.

The product of its digits is 90720, while the sum is 40.

The square root of 25294279 is about 5029.3418058430. The cubic root of 25294279 is about 293.5446040247.

The spelling of 25294279 in words is "twenty-five million, two hundred ninety-four thousand, two hundred seventy-nine".