18574425 has 36 divisors (see below), whose sum is σ = 34354944. Its totient is φ = 9583200.

The previous prime is 18574403. The next prime is 18574427. The reversal of 18574425 is 52447581.

It is not a de Polignac number, because 18574425 - 2⁵ = 18574393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18574425.

It is not an unprimeable number, because it can be changed into a prime (18574427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5644 + ... + 8306.

It is an arithmetic number, because the mean of its divisors is an integer number (954304).

Almost surely, 2^18574425 is an apocalyptic number.

18574425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18574425 is a deficient number, since it is larger than the sum of its proper divisors (15780519).

18574425 is a wasteful number, since it uses less digits than its factorization.

18574425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710 (or 2702 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 18574425 is about 4309.8056800742. The cubic root of 18574425 is about 264.8328125459.

Adding to 18574425 its product of digits (44800), we get a square (18619225 = 4315²).

The spelling of 18574425 in words is "eighteen million, five hundred seventy-four thousand, four hundred twenty-five".