125221964545 has 8 divisors (see below), whose sum is σ = 150608652480. Its totient is φ = 99949374960.

The previous prime is 125221964519. The next prime is 125221964557. The reversal of 125221964545 is 545469122521.

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

It is not a de Polignac number, because 125221964545 - 2¹¹ = 125221962497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125221964495 and 125221964504.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 28522171 + ... + 28526560.

It is an arithmetic number, because the mean of its divisors is an integer number (18826081560).

Almost surely, 2^125221964545 is an apocalyptic number.

It is an amenable number.

125221964545 is a deficient number, since it is larger than the sum of its proper divisors (25386687935).

125221964545 is an equidigital number, since it uses as much as digits as its factorization.

125221964545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57049175.

The product of its digits is 864000, while the sum is 46.

The spelling of 125221964545 in words is "one hundred twenty-five billion, two hundred twenty-one million, nine hundred sixty-four thousand, five hundred forty-five".