125463364521 has 32 divisors (see below), whose sum is σ = 193895856000. Its totient is φ = 71565463040.

The previous prime is 125463364519. The next prime is 125463364531.

125463364521 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 125463364521 - 2¹ = 125463364519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125463364531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 224796 + ... + 549053.

It is an arithmetic number, because the mean of its divisors is an integer number (6059245500).

Almost surely, 2^125463364521 is an apocalyptic number.

125463364521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125463364521 is a deficient number, since it is larger than the sum of its proper divisors (68432491479).

125463364521 is an equidigital number, since it uses as much as digits as its factorization.

125463364521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773914 (or 773880 counting only the distinct ones).

The product of its digits is 518400, while the sum is 42.

It can be divided in two parts, 125463 and 364521, that added together give a palindrome (489984).

The spelling of 125463364521 in words is "one hundred twenty-five billion, four hundred sixty-three million, three hundred sixty-four thousand, five hundred twenty-one".