25994971 has 2 divisors, whose sum is σ = 25994972. Its totient is φ = 25994970.

The previous prime is 25994959. The next prime is 25994993. The reversal of 25994971 is 17949952.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25994971 - 2¹⁵ = 25962203 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25994911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12997485 + 12997486.

It is an arithmetic number, because the mean of its divisors is an integer number (12997486).

Almost surely, 2^25994971 is an apocalyptic number.

25994971 is a deficient number, since it is larger than the sum of its proper divisors (1).

25994971 is an equidigital number, since it uses as much as digits as its factorization.

25994971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 46.

The square root of 25994971 is about 5098.5263557228. The cubic root of 25994971 is about 296.2305051056.

The spelling of 25994971 in words is "twenty-five million, nine hundred ninety-four thousand, nine hundred seventy-one".