125541986 has 16 divisors (see below), whose sum is σ = 195075000. Its totient is φ = 60523008.

The previous prime is 125541947. The next prime is 125542007. The reversal of 125541986 is 689145521.

It can be written as a sum of positive squares in 4 ways, for example, as 101384761 + 24157225 = 10069^2 + 4915^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71576 + ... + 73308.

Almost surely, 2^125541986 is an apocalyptic number.

125541986 is a deficient number, since it is larger than the sum of its proper divisors (69533014).

125541986 is a wasteful number, since it uses less digits than its factorization.

125541986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3013.

The product of its digits is 86400, while the sum is 41.

The square root of 125541986 is about 11204.5520213884. The cubic root of 125541986 is about 500.7216060684.

The spelling of 125541986 in words is "one hundred twenty-five million, five hundred forty-one thousand, nine hundred eighty-six".