125036661 has 8 divisors (see below), whose sum is σ = 172464480. Its totient is φ = 80483312.

The previous prime is 125036633. The next prime is 125036677. The reversal of 125036661 is 166630521.

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 125036661 - 2⁵ = 125036629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125036621) 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, 718515 + ... + 718688.

It is an arithmetic number, because the mean of its divisors is an integer number (21558060).

Almost surely, 2^125036661 is an apocalyptic number.

It is an amenable number.

125036661 is a deficient number, since it is larger than the sum of its proper divisors (47427819).

125036661 is a wasteful number, since it uses less digits than its factorization.

125036661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437235.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 125036661 is about 11181.9792970654. The cubic root of 125036661 is about 500.0488765553.

The spelling of 125036661 in words is "one hundred twenty-five million, thirty-six thousand, six hundred sixty-one".