125543145 has 64 divisors (see below), whose sum is σ = 252403200. Its totient is φ = 52948224.

The previous prime is 125543111. The next prime is 125543161. The reversal of 125543145 is 541345521.

It is not a de Polignac number, because 125543145 - 2¹⁶ = 125477609 is a prime.

It is a super-2 number, since 2×125543145² = 31522162512982050, which contains 22 as substring.

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 63 ways as a sum of consecutive naturals, for example, 65947 + ... + 67823.

It is an arithmetic number, because the mean of its divisors is an integer number (3943800).

Almost surely, 2^125543145 is an apocalyptic number.

125543145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125543145 is an abundant number, since it is smaller than the sum of its proper divisors (126860055).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125543145 is a wasteful number, since it uses less digits than its factorization.

125543145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919 (or 1905 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 125543145 is about 11204.6037413199. The cubic root of 125543145 is about 500.7231469461.

Adding to 125543145 its reverse (541345521), we get a palindrome (666888666).

The spelling of 125543145 in words is "one hundred twenty-five million, five hundred forty-three thousand, one hundred forty-five".