125505986 has 16 divisors (see below), whose sum is σ = 196694784. Its totient is φ = 59948064.

The previous prime is 125505959. The next prime is 125506013. The reversal of 125505986 is 689505521.

It is an interprime number because it is at equal distance from previous prime (125505959) and next prime (125506013).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53735 + ... + 56021.

It is an arithmetic number, because the mean of its divisors is an integer number (12293424).

Almost surely, 2^125505986 is an apocalyptic number.

125505986 is a deficient number, since it is larger than the sum of its proper divisors (71188798).

125505986 is a wasteful number, since it uses less digits than its factorization.

125505986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3505.

The product of its (nonzero) digits is 108000, while the sum is 41.

The square root of 125505986 is about 11202.9454162733. The cubic root of 125505986 is about 500.6737397418.

The spelling of 125505986 in words is "one hundred twenty-five million, five hundred five thousand, nine hundred eighty-six".