18525274 has 8 divisors (see below), whose sum is σ = 29422548. Its totient is φ = 8717760.

The previous prime is 18525239. The next prime is 18525293. The reversal of 18525274 is 47252581.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18122049 + 403225 = 4257^2 + 635^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 544861 = 18525274 / (1 + 8 + 5 + 2 + 5 + 2 + 7 + 4).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272397 + ... + 272464.

Almost surely, 2^18525274 is an apocalyptic number.

18525274 is a deficient number, since it is larger than the sum of its proper divisors (10897274).

18525274 is a wasteful number, since it uses less digits than its factorization.

18525274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544880.

The product of its digits is 22400, while the sum is 34.

The square root of 18525274 is about 4304.0996735671. The cubic root of 18525274 is about 264.5990090588.

The spelling of 18525274 in words is "eighteen million, five hundred twenty-five thousand, two hundred seventy-four".