18097425 has 48 divisors (see below), whose sum is σ = 33757760. Its totient is φ = 9622800.

The previous prime is 18097423. The next prime is 18097439. The reversal of 18097425 is 52479081.

It is not a de Polignac number, because 18097425 - 2¹ = 18097423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18097425.

It is not an unprimeable number, because it can be changed into a prime (18097423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54510 + ... + 54840.

Almost surely, 2^18097425 is an apocalyptic number.

18097425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18097425 is a deficient number, since it is larger than the sum of its proper divisors (15660335).

18097425 is an frugal number, since it uses more digits than its factorization.

18097425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 18097425 is about 4254.1068392790. The cubic root of 18097425 is about 262.5461143474.

The spelling of 18097425 in words is "eighteen million, ninety-seven thousand, four hundred twenty-five".