189877425 has 12 divisors (see below), whose sum is σ = 313930800. Its totient is φ = 101267920.

The previous prime is 189877421. The next prime is 189877433. The reversal of 189877425 is 524778981.

It is not a de Polignac number, because 189877425 - 2² = 189877421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189877421) 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 11 ways as a sum of consecutive naturals, for example, 1265775 + ... + 1265924.

It is an arithmetic number, because the mean of its divisors is an integer number (26160900).

Almost surely, 2^189877425 is an apocalyptic number.

189877425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189877425 is a deficient number, since it is larger than the sum of its proper divisors (124053375).

189877425 is a wasteful number, since it uses less digits than its factorization.

189877425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2531712 (or 2531707 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 51.

The square root of 189877425 is about 13779.6017721849. The cubic root of 189877425 is about 574.7660547982.

The spelling of 189877425 in words is "one hundred eighty-nine million, eight hundred seventy-seven thousand, four hundred twenty-five".