125422121504 has 12 divisors (see below), whose sum is σ = 246924801774. Its totient is φ = 62711060736.

The previous prime is 125422121441. The next prime is 125422121509. The reversal of 125422121504 is 405121224521.

It can be written as a sum of positive squares in only one way, i.e., 99636185104 + 25785936400 = 315652^2 + 160580^2 .

It is not an unprimeable number, because it can be changed into a prime (125422121509) 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 as a sum of consecutive naturals, namely, 1959720617 + ... + 1959720680.

Almost surely, 2^125422121504 is an apocalyptic number.

It is an amenable number.

125422121504 is a deficient number, since it is larger than the sum of its proper divisors (121502680270).

125422121504 is an equidigital number, since it uses as much as digits as its factorization.

125422121504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3919441307 (or 3919441299 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The spelling of 125422121504 in words is "one hundred twenty-five billion, four hundred twenty-two million, one hundred twenty-one thousand, five hundred four".