25388663 has 2 divisors, whose sum is σ = 25388664. Its totient is φ = 25388662.

The previous prime is 25388651. The next prime is 25388681. The reversal of 25388663 is 36688352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25388663 - 2⁴ = 25388647 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25388663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25388263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12694331 + 12694332.

It is an arithmetic number, because the mean of its divisors is an integer number (12694332).

Almost surely, 2^25388663 is an apocalyptic number.

25388663 is a deficient number, since it is larger than the sum of its proper divisors (1).

25388663 is an equidigital number, since it uses as much as digits as its factorization.

25388663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 41.

The square root of 25388663 is about 5038.7164040061. The cubic root of 25388663 is about 293.9092651959.

The spelling of 25388663 in words is "twenty-five million, three hundred eighty-eight thousand, six hundred sixty-three".