125061661 has 8 divisors (see below), whose sum is σ = 128177280. Its totient is φ = 121984512.

The previous prime is 125061653. The next prime is 125061679. The reversal of 125061661 is 166160521.

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 125061661 - 2³ = 125061653 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 (125061611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2980 + ... + 16093.

It is an arithmetic number, because the mean of its divisors is an integer number (16022160).

Almost surely, 2^125061661 is an apocalyptic number.

It is an amenable number.

125061661 is a deficient number, since it is larger than the sum of its proper divisors (3115619).

125061661 is an equidigital number, since it uses as much as digits as its factorization.

125061661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19235.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 125061661 is about 11183.0971112657. The cubic root of 125061661 is about 500.0822011519.

The spelling of 125061661 in words is "one hundred twenty-five million, sixty-one thousand, six hundred sixty-one".