125221543504303 has 4 divisors (see below), whose sum is σ = 125349712945920. Its totient is φ = 125093374062688.

The previous prime is 125221543504259. The next prime is 125221543504313. The reversal of 125221543504303 is 303405345122521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125221543504303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125221543504313) 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, 64084719343 + ... + 64084721296.

It is an arithmetic number, because the mean of its divisors is an integer number (31337428236480).

Almost surely, 2^{125221543504303} is an apocalyptic number.

125221543504303 is a deficient number, since it is larger than the sum of its proper divisors (128169441617).

125221543504303 is an equidigital number, since it uses as much as digits as its factorization.

125221543504303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128169441616.

The product of its (nonzero) digits is 432000, while the sum is 40.

Adding to 125221543504303 its reverse (303405345122521), we get a palindrome (428626888626824).

The spelling of 125221543504303 in words is "one hundred twenty-five trillion, two hundred twenty-one billion, five hundred forty-three million, five hundred four thousand, three hundred three".