125844802855249 has 3 divisors (see below), whose sum is σ = 125844814073307. Its totient is φ = 125844791637192.

The previous prime is 125844802855231. The next prime is 125844802855279. The reversal of 125844802855249 is 942558208448521.

It is a happy number.

The square root of 125844802855249 is 11218057.

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.

It can be written as a sum of positive squares in only one way, i.e., 124247025958225 + 1597776897024 = 11146615^2 + 1264032^2 .

It is not a de Polignac number, because 125844802855249 - 2⁵ = 125844802855217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125844802855279) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5609029 + ... + 16827085.

It is an arithmetic number, because the mean of its divisors is an integer number (41948271357769).

Almost surely, 2^{125844802855249} is an apocalyptic number.

125844802855249 is the 11218057-th square number.

125844802855249 is the 5609029-th centered octagonal number.

It is an amenable number.

125844802855249 is a deficient number, since it is larger than the sum of its proper divisors (11218058).

125844802855249 is an frugal number, since it uses more digits than its factorization.

125844802855249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22436114 (or 11218057 counting only the distinct ones).

The product of its (nonzero) digits is 294912000, while the sum is 67.

The spelling of 125844802855249 in words is "one hundred twenty-five trillion, eight hundred forty-four billion, eight hundred two million, eight hundred fifty-five thousand, two hundred forty-nine".