125066506 has 4 divisors (see below), whose sum is σ = 187599762. Its totient is φ = 62533252.

The previous prime is 125066453. The next prime is 125066507. The reversal of 125066506 is 605660521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 93605625 + 31460881 = 9675^2 + 5609^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (125066507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31266625 + ... + 31266628.

Almost surely, 2^125066506 is an apocalyptic number.

125066506 is a deficient number, since it is larger than the sum of its proper divisors (62533256).

125066506 is an equidigital number, since it uses as much as digits as its factorization.

125066506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62533255.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 125066506 is about 11183.3137307329. The cubic root of 125066506 is about 500.0886589449.

The spelling of 125066506 in words is "one hundred twenty-five million, sixty-six thousand, five hundred six".