25023971 has 4 divisors (see below), whose sum is σ = 28598832. Its totient is φ = 21449112.

The previous prime is 25023959. The next prime is 25023991. The reversal of 25023971 is 17932052.

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 25023971 - 2⁶ = 25023907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25023941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1787420 + ... + 1787433.

It is an arithmetic number, because the mean of its divisors is an integer number (7149708).

Almost surely, 2^25023971 is an apocalyptic number.

25023971 is a deficient number, since it is larger than the sum of its proper divisors (3574861).

25023971 is an equidigital number, since it uses as much as digits as its factorization.

25023971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3574860.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 25023971 is about 5002.3965256665. The cubic root of 25023971 is about 292.4951994732.

The spelling of 25023971 in words is "twenty-five million, twenty-three thousand, nine hundred seventy-one".