18525616 has 10 divisors (see below), whose sum is σ = 35893412. Its totient is φ = 9262800.

The previous prime is 18525613. The next prime is 18525623. The reversal of 18525616 is 61652581.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (18525613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578910 + ... + 578941.

Almost surely, 2^18525616 is an apocalyptic number.

18525616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18525616 is a deficient number, since it is larger than the sum of its proper divisors (17367796).

18525616 is a wasteful number, since it uses less digits than its factorization.

18525616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157859 (or 1157853 counting only the distinct ones).

The product of its digits is 14400, while the sum is 34.

The square root of 18525616 is about 4304.1394029469. The cubic root of 18525616 is about 264.6006373263.

The spelling of 18525616 in words is "eighteen million, five hundred twenty-five thousand, six hundred sixteen".