125795774329 has 3 divisors (see below), whose sum is σ = 125796129007. Its totient is φ = 125795419652.

The previous prime is 125795774323. The next prime is 125795774353. The reversal of 125795774329 is 923477597521.

The square root of 125795774329 is 354677.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 923477597521 = 2393 ⋅385907897.

It can be written as a sum of positive squares in only one way, i.e., 63768875625 + 62026898704 = 252525^2 + 249052^2 .

It is not a de Polignac number, because 125795774329 - 2³¹ = 123648290681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125795774323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 177339 + ... + 532015.

Almost surely, 2^125795774329 is an apocalyptic number.

125795774329 is the 354677-th square number.

125795774329 is the 177339-th centered octagonal number.

It is an amenable number.

125795774329 is a deficient number, since it is larger than the sum of its proper divisors (354678).

125795774329 is an frugal number, since it uses more digits than its factorization.

125795774329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709354 (or 354677 counting only the distinct ones).

The product of its digits is 33339600, while the sum is 61.

The spelling of 125795774329 in words is "one hundred twenty-five billion, seven hundred ninety-five million, seven hundred seventy-four thousand, three hundred twenty-nine".