18884025 has 36 divisors (see below), whose sum is σ = 35820252. Its totient is φ = 9477120.

The previous prime is 18883999. The next prime is 18884029. The reversal of 18884025 is 52048881.

It can be written as a sum of positive squares in 6 ways, for example, as 13689 + 18870336 = 117^2 + 4344^2 .

It is not a de Polignac number, because 18884025 - 2⁵ = 18883993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18884029) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1357 + ... + 6293.

It is an arithmetic number, because the mean of its divisors is an integer number (995007).

Almost surely, 2^18884025 is an apocalyptic number.

18884025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18884025 is a deficient number, since it is larger than the sum of its proper divisors (16936227).

18884025 is a wasteful number, since it uses less digits than its factorization.

18884025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4970 (or 4962 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 18884025 is about 4345.5753359020. The cubic root of 18884025 is about 266.2961303394.

The spelling of 18884025 in words is "eighteen million, eight hundred eighty-four thousand, twenty-five".