125817073 has 4 divisors (see below), whose sum is σ = 128494080. Its totient is φ = 123140068.

The previous prime is 125817067. The next prime is 125817079. The reversal of 125817073 is 370718521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (125817067) and next prime (125817079).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125817073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125817079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1338433 + ... + 1338526.

It is an arithmetic number, because the mean of its divisors is an integer number (32123520).

Almost surely, 2^125817073 is an apocalyptic number.

It is an amenable number.

125817073 is a deficient number, since it is larger than the sum of its proper divisors (2677007).

125817073 is an equidigital number, since it uses as much as digits as its factorization.

125817073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2677006.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 125817073 is about 11216.8209845749. The cubic root of 125817073 is about 501.0870655309.

The spelling of 125817073 in words is "one hundred twenty-five million, eight hundred seventeen thousand, seventy-three".