125305547615 has 4 divisors (see below), whose sum is σ = 150366657144. Its totient is φ = 100244438088.

The previous prime is 125305547597. The next prime is 125305547617. The reversal of 125305547615 is 516745503521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125305547615 - 2⁸ = 125305547359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125305547617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12530554757 + ... + 12530554766.

It is an arithmetic number, because the mean of its divisors is an integer number (37591664286).

Almost surely, 2^125305547615 is an apocalyptic number.

125305547615 is a deficient number, since it is larger than the sum of its proper divisors (25061109529).

125305547615 is an equidigital number, since it uses as much as digits as its factorization.

125305547615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25061109528.

The product of its (nonzero) digits is 630000, while the sum is 44.

The spelling of 125305547615 in words is "one hundred twenty-five billion, three hundred five million, five hundred forty-seven thousand, six hundred fifteen".