125421053055 has 16 divisors (see below), whose sum is σ = 203500076544. Its totient is φ = 65949097760.

The previous prime is 125421053053. The next prime is 125421053063. The reversal of 125421053055 is 550350124521.

It is not a de Polignac number, because 125421053055 - 2¹ = 125421053053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125421053053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58882059 + ... + 58884188.

It is an arithmetic number, because the mean of its divisors is an integer number (12718754784).

Almost surely, 2^125421053055 is an apocalyptic number.

125421053055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125421053055 is a deficient number, since it is larger than the sum of its proper divisors (78079023489).

125421053055 is a wasteful number, since it uses less digits than its factorization.

125421053055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117766326.

The product of its (nonzero) digits is 30000, while the sum is 33.

Adding to 125421053055 its reverse (550350124521), we get a palindrome (675771177576).

The spelling of 125421053055 in words is "one hundred twenty-five billion, four hundred twenty-one million, fifty-three thousand, fifty-five".