125645806 has 32 divisors (see below), whose sum is σ = 229068000. Its totient is φ = 50897280.

The previous prime is 125645783. The next prime is 125645809. The reversal of 125645806 is 608546521.

It is a super-3 number, since 3×125645806³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125645809) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 720 + ... + 15868.

It is an arithmetic number, because the mean of its divisors is an integer number (7158375).

Almost surely, 2^125645806 is an apocalyptic number.

125645806 is a deficient number, since it is larger than the sum of its proper divisors (103422194).

125645806 is a wasteful number, since it uses less digits than its factorization.

125645806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15204.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 125645806 is about 11209.1840024152. The cubic root of 125645806 is about 500.8595960092.

The spelling of 125645806 in words is "one hundred twenty-five million, six hundred forty-five thousand, eight hundred six".