6255597780 has 144 divisors (see below), whose sum is σ = 20159979840. Its totient is φ = 1564683264.

The previous prime is 6255597769. The next prime is 6255597793. The reversal of 6255597780 is 877955526.

6255597780 is a `hidden beast` number, since 6 + 2 + 5 + 559 + 7 + 7 + 80 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 936091 + ... + 942749.

It is an arithmetic number, because the mean of its divisors is an integer number (139999860).

Almost surely, 2^6255597780 is an apocalyptic number.

6255597780 is a gapful number since it is divisible by the number (60) 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 6255597780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10079989920).

6255597780 is an abundant number, since it is smaller than the sum of its proper divisors (13904382060).

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

6255597780 is a wasteful number, since it uses less digits than its factorization.

6255597780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6998 (or 6993 counting only the distinct ones).

The product of its (nonzero) digits is 5292000, while the sum is 54.

The square root of 6255597780 is about 79092.3370498053. The cubic root of 6255597780 is about 1842.5655158301.

The spelling of 6255597780 in words is "six billion, two hundred fifty-five million, five hundred ninety-seven thousand, seven hundred eighty".