25226413 has 2 divisors, whose sum is σ = 25226414. Its totient is φ = 25226412.

The previous prime is 25226401. The next prime is 25226417. The reversal of 25226413 is 31462252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25220484 + 5929 = 5022^2 + 77^2 .

It is a cyclic number.

It is not a de Polignac number, because 25226413 - 2²¹ = 23129261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25226417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12613206 + 12613207.

It is an arithmetic number, because the mean of its divisors is an integer number (12613207).

Almost surely, 2^25226413 is an apocalyptic number.

It is an amenable number.

25226413 is a deficient number, since it is larger than the sum of its proper divisors (1).

25226413 is an equidigital number, since it uses as much as digits as its factorization.

25226413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 25.

The square root of 25226413 is about 5022.5902679793. The cubic root of 25226413 is about 293.2818365464.

Adding to 25226413 its reverse (31462252), we get a palindrome (56688665).

The spelling of 25226413 in words is "twenty-five million, two hundred twenty-six thousand, four hundred thirteen".