25539713 has 2 divisors, whose sum is σ = 25539714. Its totient is φ = 25539712.

The previous prime is 25539697. The next prime is 25539719. The reversal of 25539713 is 31793552.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24671089 + 868624 = 4967^2 + 932^2 .

It is a cyclic number.

It is not a de Polignac number, because 25539713 - 2⁴ = 25539697 is a prime.

It is not a weakly prime, because it can be changed into another prime (25539719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12769856 + 12769857.

It is an arithmetic number, because the mean of its divisors is an integer number (12769857).

Almost surely, 2^25539713 is an apocalyptic number.

It is an amenable number.

25539713 is a deficient number, since it is larger than the sum of its proper divisors (1).

25539713 is an equidigital number, since it uses as much as digits as its factorization.

25539713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28350, while the sum is 35.

The square root of 25539713 is about 5053.6831123449. The cubic root of 25539713 is about 294.4909847033.

The spelling of 25539713 in words is "twenty-five million, five hundred thirty-nine thousand, seven hundred thirteen".