25213871 has 2 divisors, whose sum is σ = 25213872. Its totient is φ = 25213870.

The previous prime is 25213861. The next prime is 25213879. The reversal of 25213871 is 17831252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25213871 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25213879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12606935 + 12606936.

It is an arithmetic number, because the mean of its divisors is an integer number (12606936).

Almost surely, 2^25213871 is an apocalyptic number.

25213871 is a deficient number, since it is larger than the sum of its proper divisors (1).

25213871 is an equidigital number, since it uses as much as digits as its factorization.

25213871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 29.

The square root of 25213871 is about 5021.3415538081. The cubic root of 25213871 is about 293.2332241316.

The spelling of 25213871 in words is "twenty-five million, two hundred thirteen thousand, eight hundred seventy-one".