125544539 has 2 divisors, whose sum is σ = 125544540. Its totient is φ = 125544538.

The previous prime is 125544499. The next prime is 125544547. The reversal of 125544539 is 935445521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125544539 is a prime.

It is a super-2 number, since 2×125544539² = 31522862545445042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125544599) 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 as a sum of consecutive naturals, namely, 62772269 + 62772270.

It is an arithmetic number, because the mean of its divisors is an integer number (62772270).

Almost surely, 2^125544539 is an apocalyptic number.

125544539 is a deficient number, since it is larger than the sum of its proper divisors (1).

125544539 is an equidigital number, since it uses as much as digits as its factorization.

125544539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108000, while the sum is 38.

The square root of 125544539 is about 11204.6659477202. The cubic root of 125544539 is about 500.7250002412.

The spelling of 125544539 in words is "one hundred twenty-five million, five hundred forty-four thousand, five hundred thirty-nine".