125645611 has 8 divisors (see below), whose sum is σ = 154640864. Its totient is φ = 99411840.

The previous prime is 125645587. The next prime is 125645621. The reversal of 125645611 is 116546521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125645611 - 2⁹ = 125645099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125645621) 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 7 ways as a sum of consecutive naturals, for example, 690270 + ... + 690451.

It is an arithmetic number, because the mean of its divisors is an integer number (19330108).

Almost surely, 2^125645611 is an apocalyptic number.

125645611 is a deficient number, since it is larger than the sum of its proper divisors (28995253).

125645611 is a wasteful number, since it uses less digits than its factorization.

125645611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380741.

The product of its digits is 7200, while the sum is 31.

The square root of 125645611 is about 11209.1753041872. The cubic root of 125645611 is about 500.8593369007.

The spelling of 125645611 in words is "one hundred twenty-five million, six hundred forty-five thousand, six hundred eleven".