125530545 has 32 divisors (see below), whose sum is σ = 234888192. Its totient is φ = 56048832.

The previous prime is 125530507. The next prime is 125530547. The reversal of 125530545 is 545035521.

It is a happy number.

It is not a de Polignac number, because 125530545 - 2⁷ = 125530417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125530547) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 9387 + ... + 18416.

It is an arithmetic number, because the mean of its divisors is an integer number (7340256).

Almost surely, 2^125530545 is an apocalyptic number.

125530545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125530545 is a deficient number, since it is larger than the sum of its proper divisors (109357647).

125530545 is a wasteful number, since it uses less digits than its factorization.

125530545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27861.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 125530545 is about 11204.0414583310. The cubic root of 125530545 is about 500.7063948759.

The spelling of 125530545 in words is "one hundred twenty-five million, five hundred thirty thousand, five hundred forty-five".