18958325 has 12 divisors (see below), whose sum is σ = 24531168. Its totient is φ = 14506800.

The previous prime is 18958309. The next prime is 18958337. The reversal of 18958325 is 52385981.

18958325 = 300² + 301² + ... + 437².

It is not a de Polignac number, because 18958325 - 2⁴ = 18958309 is a prime.

It is a super-4 number, since 4×18958325⁴ (a number of 30 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 15911 + ... + 17060.

It is an arithmetic number, because the mean of its divisors is an integer number (2044264).

Almost surely, 2^18958325 is an apocalyptic number.

It is an amenable number.

18958325 is a deficient number, since it is larger than the sum of its proper divisors (5572843).

18958325 is a wasteful number, since it uses less digits than its factorization.

18958325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33004 (or 32999 counting only the distinct ones).

The product of its digits is 86400, while the sum is 41.

The square root of 18958325 is about 4354.1158689222. The cubic root of 18958325 is about 266.6449244426.

The spelling of 18958325 in words is "eighteen million, nine hundred fifty-eight thousand, three hundred twenty-five".