125643045 has 32 divisors (see below), whose sum is σ = 220176000. Its totient is φ = 60675840.

The previous prime is 125643013. The next prime is 125643053. The reversal of 125643045 is 540346521.

It is not a de Polignac number, because 125643045 - 2⁵ = 125643013 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44331 + ... + 47079.

It is an arithmetic number, because the mean of its divisors is an integer number (6880500).

Almost surely, 2^125643045 is an apocalyptic number.

125643045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125643045 is a deficient number, since it is larger than the sum of its proper divisors (94532955).

125643045 is a wasteful number, since it uses less digits than its factorization.

125643045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3045.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 125643045 is about 11209.0608437995. The cubic root of 125643045 is about 500.8559272743.

Adding to 125643045 its reverse (540346521), we get a palindrome (665989566).

The spelling of 125643045 in words is "one hundred twenty-five million, six hundred forty-three thousand, forty-five".