18725061 has 4 divisors (see below), whose sum is σ = 24966752. Its totient is φ = 12483372.

The previous prime is 18725033. The next prime is 18725099. The reversal of 18725061 is 16052781.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 18725061 - 2⁵ = 18725029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18715061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3120841 + ... + 3120846.

It is an arithmetic number, because the mean of its divisors is an integer number (6241688).

Almost surely, 2^18725061 is an apocalyptic number.

It is an amenable number.

18725061 is a deficient number, since it is larger than the sum of its proper divisors (6241691).

18725061 is an equidigital number, since it uses as much as digits as its factorization.

18725061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6241690.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 18725061 is about 4327.2463530518. The cubic root of 18725061 is about 265.5468049600.

The spelling of 18725061 in words is "eighteen million, seven hundred twenty-five thousand, sixty-one".