25655723 has 4 divisors (see below), whose sum is σ = 25684560. Its totient is φ = 25626888.

The previous prime is 25655699. The next prime is 25655731. The reversal of 25655723 is 32755652.

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 25655723 - 2⁶ = 25655659 is a prime.

It is a super-2 number, since 2×25655723² = 1316432245305458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25655743) 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, 13040 + ... + 14877.

It is an arithmetic number, because the mean of its divisors is an integer number (6421140).

Almost surely, 2^25655723 is an apocalyptic number.

25655723 is a deficient number, since it is larger than the sum of its proper divisors (28837).

25655723 is an equidigital number, since it uses as much as digits as its factorization.

25655723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28836.

The product of its digits is 63000, while the sum is 35.

The square root of 25655723 is about 5065.1478754327. The cubic root of 25655723 is about 294.9362037665.

The spelling of 25655723 in words is "twenty-five million, six hundred fifty-five thousand, seven hundred twenty-three".