18701210425 has 12 divisors (see below), whose sum is σ = 23989139820. Its totient is φ = 14445072320.

The previous prime is 18701210413. The next prime is 18701210441. The reversal of 18701210425 is 52401210781.

It can be written as a sum of positive squares in 6 ways, for example, as 665794809 + 18035415616 = 25803^2 + 134296^2 .

It is a de Polignac number, because none of the positive numbers 2^k-18701210425 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12896662 + ... + 12898111.

It is an arithmetic number, because the mean of its divisors is an integer number (1999094985).

Almost surely, 2^18701210425 is an apocalyptic number.

It is an amenable number.

18701210425 is a deficient number, since it is larger than the sum of its proper divisors (5287929395).

18701210425 is a wasteful number, since it uses less digits than its factorization.

18701210425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25794812 (or 25794807 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 31.

The spelling of 18701210425 in words is "eighteen billion, seven hundred one million, two hundred ten thousand, four hundred twenty-five".