125444405100 has 216 divisors, whose sum is σ = 422900463888. Its totient is φ = 28626124800.

The previous prime is 125444405083. The next prime is 125444405129. The reversal of 125444405100 is 1504444521.

125444405100 = 17693² + 17694² + ... + 18084².

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 9416044 + ... + 9429356.

It is an arithmetic number, because the mean of its divisors is an integer number (1957872518).

Almost surely, 2^125444405100 is an apocalyptic number.

125444405100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125444405100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211450231944).

125444405100 is an abundant number, since it is smaller than the sum of its proper divisors (297456058788).

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

125444405100 is a wasteful number, since it uses less digits than its factorization.

125444405100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13985 (or 13971 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 125444405100 its reverse (1504444521), we get a palindrome (126948849621).

The spelling of 125444405100 in words is "one hundred twenty-five billion, four hundred forty-four million, four hundred five thousand, one hundred".