188894425 has 12 divisors (see below), whose sum is σ = 234459820. Its totient is φ = 150966720.

The previous prime is 188894417. The next prime is 188894437. The reversal of 188894425 is 524498881.

It can be written as a sum of positive squares in 6 ways, for example, as 32844361 + 156050064 = 5731^2 + 12492^2 .

It is not a de Polignac number, because 188894425 - 2³ = 188894417 is a prime.

It is a super-2 number, since 2×188894425² = 71362207592161250, which contains 22 as substring.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 27211 + ... + 33439.

Almost surely, 2^188894425 is an apocalyptic number.

It is an amenable number.

188894425 is a deficient number, since it is larger than the sum of its proper divisors (45565395).

188894425 is a wasteful number, since it uses less digits than its factorization.

188894425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7452 (or 7447 counting only the distinct ones).

The product of its digits is 737280, while the sum is 49.

The square root of 188894425 is about 13743.8868228751. The cubic root of 188894425 is about 573.7724789980.

The spelling of 188894425 in words is "one hundred eighty-eight million, eight hundred ninety-four thousand, four hundred twenty-five".