25000971 has 4 divisors (see below), whose sum is σ = 33334632. Its totient is φ = 16667312.

The previous prime is 25000951. The next prime is 25000981. The reversal of 25000971 is 17900052.

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 25000971 - 2⁶ = 25000907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25000951) 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, 4166826 + ... + 4166831.

It is an arithmetic number, because the mean of its divisors is an integer number (8333658).

Almost surely, 2^25000971 is an apocalyptic number.

25000971 is a deficient number, since it is larger than the sum of its proper divisors (8333661).

25000971 is an equidigital number, since it uses as much as digits as its factorization.

25000971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8333660.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 25000971 is about 5000.0970990572. The cubic root of 25000971 is about 292.4055594006.

The spelling of 25000971 in words is "twenty-five million, nine hundred seventy-one", and thus it is an aban number.