18007693425 has 36 divisors (see below), whose sum is σ = 32566965184. Its totient is φ = 9510847200.

The previous prime is 18007693409. The next prime is 18007693481. The reversal of 18007693425 is 52439670081.

It is not a de Polignac number, because 18007693425 - 2⁴ = 18007693409 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 365341 + ... + 411690.

It is a 1-persistent number, because it is pandigital, but 2⋅18007693425 = 36015386850 is not.

Almost surely, 2^18007693425 is an apocalyptic number.

18007693425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18007693425 is a deficient number, since it is larger than the sum of its proper divisors (14559271759).

18007693425 is a wasteful number, since it uses less digits than its factorization.

18007693425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777150 (or 777142 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 18007693425 in words is "eighteen billion, seven million, six hundred ninety-three thousand, four hundred twenty-five".