25116971 has 4 divisors (see below), whose sum is σ = 27400344. Its totient is φ = 22833600.

The previous prime is 25116961. The next prime is 25116977. The reversal of 25116971 is 17961152.

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 25116971 - 2⁶ = 25116907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25116977) 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, 1141670 + ... + 1141691.

It is an arithmetic number, because the mean of its divisors is an integer number (6850086).

Almost surely, 2^25116971 is an apocalyptic number.

25116971 is a deficient number, since it is larger than the sum of its proper divisors (2283373).

25116971 is a wasteful number, since it uses less digits than its factorization.

25116971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2283372.

The product of its digits is 3780, while the sum is 32.

The square root of 25116971 is about 5011.6834497003. The cubic root of 25116971 is about 292.8570981332.

The spelling of 25116971 in words is "twenty-five million, one hundred sixteen thousand, nine hundred seventy-one".