125821450082 has 8 divisors (see below), whose sum is σ = 189141573852. Its totient is φ = 62774258800.

The previous prime is 125821450081. The next prime is 125821450129. The reversal of 125821450082 is 280054128521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 125791518241 + 29931841 = 354671^2 + 5471^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (125821450081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68231969 + ... + 68233812.

Almost surely, 2^125821450082 is an apocalyptic number.

125821450082 is a deficient number, since it is larger than the sum of its proper divisors (63320123770).

125821450082 is a wasteful number, since it uses less digits than its factorization.

125821450082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136466244.

The product of its (nonzero) digits is 51200, while the sum is 38.

The spelling of 125821450082 in words is "one hundred twenty-five billion, eight hundred twenty-one million, four hundred fifty thousand, eighty-two".