25280679 has 4 divisors (see below), whose sum is σ = 33707576. Its totient is φ = 16853784.

The previous prime is 25280669. The next prime is 25280687. The reversal of 25280679 is 97608252.

It is a happy number.

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

It is not a de Polignac number, because 25280679 - 2⁷ = 25280551 is a prime.

It is a super-2 number, since 2×25280679² = 1278225461402082, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25280639) 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, 4213444 + ... + 4213449.

It is an arithmetic number, because the mean of its divisors is an integer number (8426894).

Almost surely, 2^25280679 is an apocalyptic number.

25280679 is a deficient number, since it is larger than the sum of its proper divisors (8426897).

25280679 is an equidigital number, since it uses as much as digits as its factorization.

25280679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8426896.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 25280679 is about 5027.9895584617. The cubic root of 25280679 is about 293.4919844537.

The spelling of 25280679 in words is "twenty-five million, two hundred eighty thousand, six hundred seventy-nine".