18844050825 has 18 divisors (see below), whose sum is σ = 33751789214. Its totient is φ = 10050160320.

The previous prime is 18844050803. The next prime is 18844050847. The reversal of 18844050825 is 52805044881.

18844050825 is a `hidden beast` number, since 1 + 8 + 84 + 40 + 508 + 25 = 666.

It is an interprime number because it is at equal distance from previous prime (18844050803) and next prime (18844050847).

It can be written as a sum of positive squares in 3 ways, for example, as 87104889 + 18756945936 = 9333^2 + 136956^2 .

It is not a de Polignac number, because 18844050825 - 2⁶ = 18844050761 is a prime.

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

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 41875444 + ... + 41875893.

Almost surely, 2^18844050825 is an apocalyptic number.

18844050825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18844050825 is a deficient number, since it is larger than the sum of its proper divisors (14907738389).

18844050825 is a wasteful number, since it uses less digits than its factorization.

18844050825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83751353 (or 83751345 counting only the distinct ones).

The product of its (nonzero) digits is 409600, while the sum is 45.

The spelling of 18844050825 in words is "eighteen billion, eight hundred forty-four million, fifty thousand, eight hundred twenty-five".