125363363521 has 24 divisors (see below), whose sum is σ = 138535621632. Its totient is φ = 112505112000.

The previous prime is 125363363519. The next prime is 125363363617.

125363363521 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 125363363521 - 2¹ = 125363363519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125363363821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42975355 + ... + 42978271.

It is an arithmetic number, because the mean of its divisors is an integer number (5772317568).

Almost surely, 2^125363363521 is an apocalyptic number.

125363363521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125363363521 is a deficient number, since it is larger than the sum of its proper divisors (13172258111).

125363363521 is a wasteful number, since it uses less digits than its factorization.

125363363521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3513 (or 3412 counting only the distinct ones).

The product of its digits is 291600, while the sum is 40.

It can be divided in two parts, 125363 and 363521, that added together give a palindrome (488884).

The spelling of 125363363521 in words is "one hundred twenty-five billion, three hundred sixty-three million, three hundred sixty-three thousand, five hundred twenty-one".