25142213 has 2 divisors, whose sum is σ = 25142214. Its totient is φ = 25142212.

The previous prime is 25142207. The next prime is 25142239. The reversal of 25142213 is 31224152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24433249 + 708964 = 4943^2 + 842^2 .

It is a cyclic number.

It is not a de Polignac number, because 25142213 - 2⁸ = 25141957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25142413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12571106 + 12571107.

It is an arithmetic number, because the mean of its divisors is an integer number (12571107).

Almost surely, 2^25142213 is an apocalyptic number.

It is an amenable number.

25142213 is a deficient number, since it is larger than the sum of its proper divisors (1).

25142213 is an equidigital number, since it uses as much as digits as its factorization.

25142213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 20.

The square root of 25142213 is about 5014.2011327828. The cubic root of 25142213 is about 292.9551702546.

Adding to 25142213 its reverse (31224152), we get a palindrome (56366365).

The spelling of 25142213 in words is "twenty-five million, one hundred forty-two thousand, two hundred thirteen".