125941666 has 8 divisors (see below), whose sum is σ = 189067500. Its totient is φ = 62919168.

The previous prime is 125941663. The next prime is 125941687. The reversal of 125941666 is 666149521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 123676641 + 2265025 = 11121^2 + 1505^2 .

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

It is a super-2 number, since 2×125941666² = 31722606469711112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (125941663) 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, 22711 + ... + 27706.

Almost surely, 2^125941666 is an apocalyptic number.

125941666 is a deficient number, since it is larger than the sum of its proper divisors (63125834).

125941666 is a wasteful number, since it uses less digits than its factorization.

125941666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51668.

The product of its digits is 77760, while the sum is 40.

The square root of 125941666 is about 11222.3734566267. The cubic root of 125941666 is about 501.2524149609.

The spelling of 125941666 in words is "one hundred twenty-five million, nine hundred forty-one thousand, six hundred sixty-six".