125819973 has 10 divisors (see below), whose sum is σ = 187953414. Its totient is φ = 83879928.

The previous prime is 125819927. The next prime is 125819983. The reversal of 125819973 is 379918521.

It can be written as a sum of positive squares in only one way, i.e., 112402404 + 13417569 = 10602^2 + 3663^2 .

It is not a de Polignac number, because 125819973 - 2⁹ = 125819461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125819983) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 776586 + ... + 776747.

Almost surely, 2^125819973 is an apocalyptic number.

It is an amenable number.

125819973 is a deficient number, since it is larger than the sum of its proper divisors (62133441).

125819973 is an equidigital number, since it uses as much as digits as its factorization.

125819973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553345 (or 1553336 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 125819973 is about 11216.9502539683. The cubic root of 125819973 is about 501.0909154094.

The spelling of 125819973 in words is "one hundred twenty-five million, eight hundred nineteen thousand, nine hundred seventy-three".