25680923 has 4 divisors (see below), whose sum is σ = 26375040. Its totient is φ = 24986808.

The previous prime is 25680911. The next prime is 25680937. The reversal of 25680923 is 32908652.

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 25680923 - 2⁶ = 25680859 is a prime.

It is a super-2 number, since 2×25680923² = 1319019612263858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25680943) 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, 347003 + ... + 347076.

It is an arithmetic number, because the mean of its divisors is an integer number (6593760).

Almost surely, 2^25680923 is an apocalyptic number.

25680923 is a deficient number, since it is larger than the sum of its proper divisors (694117).

25680923 is an equidigital number, since it uses as much as digits as its factorization.

25680923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694116.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 25680923 is about 5067.6348526704. The cubic root of 25680923 is about 295.0327379161.

The spelling of 25680923 in words is "twenty-five million, six hundred eighty thousand, nine hundred twenty-three".