6125402780 has 144 divisors (see below), whose sum is σ = 16437012480. Its totient is φ = 1902966912.

The previous prime is 6125402749. The next prime is 6125402791. The reversal of 6125402780 is 872045216.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 6125402780.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 421109 + ... + 435411.

It is an arithmetic number, because the mean of its divisors is an integer number (114145920).

Almost surely, 2^6125402780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6125402780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8218506240).

6125402780 is an abundant number, since it is smaller than the sum of its proper divisors (10311609700).

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

6125402780 is a wasteful number, since it uses less digits than its factorization.

6125402780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14368 (or 14359 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 6125402780 is about 78264.9524372180. The cubic root of 6125402780 is about 1829.6929601230.

Adding to 6125402780 its reverse (872045216), we get a palindrome (6997447996).

The spelling of 6125402780 in words is "six billion, one hundred twenty-five million, four hundred two thousand, seven hundred eighty".