125135005100 has 72 divisors (see below), whose sum is σ = 326668258560. Its totient is φ = 40645350720.

The previous prime is 125135005063. The next prime is 125135005109. The reversal of 125135005100 is 1500531521.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (125135005109) 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, 4691024 + ... + 4717623.

Almost surely, 2^125135005100 is an apocalyptic number.

125135005100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125135005100 is an abundant number, since it is smaller than the sum of its proper divisors (201533253460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125135005100 is a wasteful number, since it uses less digits than its factorization.

125135005100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9408687 (or 9408680 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

Adding to 125135005100 its reverse (1500531521), we get a palindrome (126635536621).

The spelling of 125135005100 in words is "one hundred twenty-five billion, one hundred thirty-five million, five thousand, one hundred".