125332661 has 2 divisors, whose sum is σ = 125332662. Its totient is φ = 125332660.

The previous prime is 125332643. The next prime is 125332673. The reversal of 125332661 is 166233521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107952100 + 17380561 = 10390^2 + 4169^2 .

It is an emirp because it is prime and its reverse (166233521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125332661 - 2¹⁴ = 125316277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125332601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62666330 + 62666331.

It is an arithmetic number, because the mean of its divisors is an integer number (62666331).

Almost surely, 2^125332661 is an apocalyptic number.

It is an amenable number.

125332661 is a deficient number, since it is larger than the sum of its proper divisors (1).

125332661 is an equidigital number, since it uses as much as digits as its factorization.

125332661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 29.

The square root of 125332661 is about 11195.2070548070. The cubic root of 125332661 is about 500.4431551111.

The spelling of 125332661 in words is "one hundred twenty-five million, three hundred thirty-two thousand, six hundred sixty-one".