125381573 has 2 divisors, whose sum is σ = 125381574. Its totient is φ = 125381572.

The previous prime is 125381569. The next prime is 125381609. The reversal of 125381573 is 375183521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120077764 + 5303809 = 10958^2 + 2303^2 .

It is a cyclic number.

It is not a de Polignac number, because 125381573 - 2² = 125381569 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125387573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62690786 + 62690787.

It is an arithmetic number, because the mean of its divisors is an integer number (62690787).

Almost surely, 2^125381573 is an apocalyptic number.

It is an amenable number.

125381573 is a deficient number, since it is larger than the sum of its proper divisors (1).

125381573 is an equidigital number, since it uses as much as digits as its factorization.

125381573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 35.

The square root of 125381573 is about 11197.3913479882. The cubic root of 125381573 is about 500.5082471945.

The spelling of 125381573 in words is "one hundred twenty-five million, three hundred eighty-one thousand, five hundred seventy-three".