18525623 has 2 divisors, whose sum is σ = 18525624. Its totient is φ = 18525622.

The previous prime is 18525613. The next prime is 18525643. The reversal of 18525623 is 32652581.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18525623 - 2¹⁰ = 18524599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18525623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18525613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9262811 + 9262812.

It is an arithmetic number, because the mean of its divisors is an integer number (9262812).

Almost surely, 2^18525623 is an apocalyptic number.

18525623 is a deficient number, since it is larger than the sum of its proper divisors (1).

18525623 is an equidigital number, since it uses as much as digits as its factorization.

18525623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 32.

The square root of 18525623 is about 4304.1402161175. The cubic root of 18525623 is about 264.6006706532.

The spelling of 18525623 in words is "eighteen million, five hundred twenty-five thousand, six hundred twenty-three".