18725263 has 2 divisors, whose sum is σ = 18725264. Its totient is φ = 18725262.

The previous prime is 18725249. The next prime is 18725269. The reversal of 18725263 is 36252781.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (36252781) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18725263 - 2²¹ = 16628111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18725269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9362631 + 9362632.

It is an arithmetic number, because the mean of its divisors is an integer number (9362632).

Almost surely, 2^18725263 is an apocalyptic number.

18725263 is a deficient number, since it is larger than the sum of its proper divisors (1).

18725263 is an equidigital number, since it uses as much as digits as its factorization.

18725263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

The square root of 18725263 is about 4327.2696934672. The cubic root of 18725263 is about 265.5477598347.

The spelling of 18725263 in words is "eighteen million, seven hundred twenty-five thousand, two hundred sixty-three".