125002520123 has 32 divisors (see below), whose sum is σ = 143466966720. Its totient is φ = 107892449280.

The previous prime is 125002520087. The next prime is 125002520147. The reversal of 125002520123 is 321025200521.

It is a cyclic number.

It is not a de Polignac number, because 125002520123 - 2¹² = 125002516027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125002570123) 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, 38354468 + ... + 38357726.

It is an arithmetic number, because the mean of its divisors is an integer number (4483342710).

Almost surely, 2^125002520123 is an apocalyptic number.

125002520123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

125002520123 is a deficient number, since it is larger than the sum of its proper divisors (18464446597).

125002520123 is a wasteful number, since it uses less digits than its factorization.

125002520123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4367.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 125002520123 its reverse (321025200521), we get a palindrome (446027720644).

The spelling of 125002520123 in words is "one hundred twenty-five billion, two million, five hundred twenty thousand, one hundred twenty-three".