25214971 has 2 divisors, whose sum is σ = 25214972. Its totient is φ = 25214970.

The previous prime is 25214963. The next prime is 25214989. The reversal of 25214971 is 17941252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25214971 - 2³ = 25214963 is a prime.

It is equal to p_1578514 and since 25214971 and 1578514 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (25214921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12607485 + 12607486.

It is an arithmetic number, because the mean of its divisors is an integer number (12607486).

Almost surely, 2^25214971 is an apocalyptic number.

25214971 is a deficient number, since it is larger than the sum of its proper divisors (1).

25214971 is an equidigital number, since it uses as much as digits as its factorization.

25214971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 31.

The square root of 25214971 is about 5021.4510850948. The cubic root of 25214971 is about 293.2374883434.

The spelling of 25214971 in words is "twenty-five million, two hundred fourteen thousand, nine hundred seventy-one".