18525527 has 2 divisors, whose sum is σ = 18525528. Its totient is φ = 18525526.

The previous prime is 18525523. The next prime is 18525539. The reversal of 18525527 is 72552581.

It is a weak prime.

It is an emirp because it is prime and its reverse (72552581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18525527 - 2² = 18525523 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18525523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9262763 + 9262764.

It is an arithmetic number, because the mean of its divisors is an integer number (9262764).

Almost surely, 2^18525527 is an apocalyptic number.

18525527 is a deficient number, since it is larger than the sum of its proper divisors (1).

18525527 is an equidigital number, since it uses as much as digits as its factorization.

18525527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28000, while the sum is 35.

The square root of 18525527 is about 4304.1290640500. The cubic root of 18525527 is about 264.6002135978.

The spelling of 18525527 in words is "eighteen million, five hundred twenty-five thousand, five hundred twenty-seven".