125027520571 has 4 divisors (see below), whose sum is σ = 125032729752. Its totient is φ = 125022311392.

The previous prime is 125027520559. The next prime is 125027520589. The reversal of 125027520571 is 175025720521.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125027520571 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125027520571.

It is not an unprimeable number, because it can be changed into a prime (125027520511) 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 3 ways as a sum of consecutive naturals, for example, 2568421 + ... + 2616646.

It is an arithmetic number, because the mean of its divisors is an integer number (31258182438).

Almost surely, 2^125027520571 is an apocalyptic number.

125027520571 is a deficient number, since it is larger than the sum of its proper divisors (5209181).

125027520571 is an equidigital number, since it uses as much as digits as its factorization.

125027520571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5209180.

The product of its (nonzero) digits is 49000, while the sum is 37.

The spelling of 125027520571 in words is "one hundred twenty-five billion, twenty-seven million, five hundred twenty thousand, five hundred seventy-one".