190805925 has 12 divisors (see below), whose sum is σ = 315465920. Its totient is φ = 101763120.

The previous prime is 190805911. The next prime is 190805959. The reversal of 190805925 is 529508091.

It is not a de Polignac number, because 190805925 - 2⁵ = 190805893 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 1271965 + ... + 1272114.

Almost surely, 2^190805925 is an apocalyptic number.

190805925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

190805925 is a deficient number, since it is larger than the sum of its proper divisors (124659995).

190805925 is a wasteful number, since it uses less digits than its factorization.

190805925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544092 (or 2544087 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 190805925 is about 13813.2517894955. The cubic root of 190805925 is about 575.7013998950.

The spelling of 190805925 in words is "one hundred ninety million, eight hundred five thousand, nine hundred twenty-five".