25748813 has 2 divisors, whose sum is σ = 25748814. Its totient is φ = 25748812.

The previous prime is 25748797. The next prime is 25748843. The reversal of 25748813 is 31884752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14845609 + 10903204 = 3853^2 + 3302^2 .

It is a cyclic number.

It is not a de Polignac number, because 25748813 - 2⁴ = 25748797 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 (25748843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12874406 + 12874407.

It is an arithmetic number, because the mean of its divisors is an integer number (12874407).

Almost surely, 2^25748813 is an apocalyptic number.

It is an amenable number.

25748813 is a deficient number, since it is larger than the sum of its proper divisors (1).

25748813 is an equidigital number, since it uses as much as digits as its factorization.

25748813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 38.

The square root of 25748813 is about 5074.3288226129. The cubic root of 25748813 is about 295.2924916672.

The spelling of 25748813 in words is "twenty-five million, seven hundred forty-eight thousand, eight hundred thirteen".