25119971 has 2 divisors, whose sum is σ = 25119972. Its totient is φ = 25119970.

The previous prime is 25119967. The next prime is 25119989. The reversal of 25119971 is 17991152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25119971 - 2² = 25119967 is a prime.

It is not a weakly prime, because it can be changed into another prime (25119901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12559985 + 12559986.

It is an arithmetic number, because the mean of its divisors is an integer number (12559986).

Almost surely, 2^25119971 is an apocalyptic number.

25119971 is a deficient number, since it is larger than the sum of its proper divisors (1).

25119971 is an equidigital number, since it uses as much as digits as its factorization.

25119971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 35.

The square root of 25119971 is about 5011.9827413909. The cubic root of 25119971 is about 292.8687573989.

The spelling of 25119971 in words is "twenty-five million, one hundred nineteen thousand, nine hundred seventy-one".