18493525 has 12 divisors (see below), whose sum is σ = 23552932. Its totient is φ = 14394240.

The previous prime is 18493507. The next prime is 18493537. The reversal of 18493525 is 52539481.

It can be written as a sum of positive squares in 6 ways, for example, as 320356 + 18173169 = 566^2 + 4263^2 .

It is not a de Polignac number, because 18493525 - 2¹¹ = 18491477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9072 + ... + 10921.

Almost surely, 2^18493525 is an apocalyptic number.

It is an amenable number.

18493525 is a deficient number, since it is larger than the sum of its proper divisors (5059407).

18493525 is a wasteful number, since it uses less digits than its factorization.

18493525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20040 (or 20035 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 18493525 is about 4300.4098641874. The cubic root of 18493525 is about 264.4477641947.

The spelling of 18493525 in words is "eighteen million, four hundred ninety-three thousand, five hundred twenty-five".