18525157 has 8 divisors (see below), whose sum is σ = 21390656. Its totient is φ = 15714432.

The previous prime is 18525139. The next prime is 18525161. The reversal of 18525157 is 75152581.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18525157 - 2¹⁹ = 18000869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18525127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12963 + ... + 14320.

It is an arithmetic number, because the mean of its divisors is an integer number (2673832).

Almost surely, 2^18525157 is an apocalyptic number.

It is an amenable number.

18525157 is a deficient number, since it is larger than the sum of its proper divisors (2865499).

18525157 is an equidigital number, since it uses as much as digits as its factorization.

18525157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27387.

The product of its digits is 14000, while the sum is 34.

The square root of 18525157 is about 4304.0860818529. The cubic root of 18525157 is about 264.5984520153.

The spelling of 18525157 in words is "eighteen million, five hundred twenty-five thousand, one hundred fifty-seven".