25279723 has 4 divisors (see below), whose sum is σ = 28891120. Its totient is φ = 21668328.

The previous prime is 25279721. The next prime is 25279733. The reversal of 25279723 is 32797252.

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 25279723 - 2¹ = 25279721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25279721) 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, 1805688 + ... + 1805701.

It is an arithmetic number, because the mean of its divisors is an integer number (7222780).

Almost surely, 2^25279723 is an apocalyptic number.

25279723 is a deficient number, since it is larger than the sum of its proper divisors (3611397).

25279723 is an equidigital number, since it uses as much as digits as its factorization.

25279723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3611396.

The product of its digits is 52920, while the sum is 37.

The square root of 25279723 is about 5027.8944897442. The cubic root of 25279723 is about 293.4882848976.

It can be divided in two parts, 2 and 5279723, that added together give a palindrome (5279725).

The spelling of 25279723 in words is "twenty-five million, two hundred seventy-nine thousand, seven hundred twenty-three".