2125266660 has 240 divisors, whose sum is σ = 7657151040. Its totient is φ = 488021760.

The previous prime is 2125266623. The next prime is 2125266667. The reversal of 2125266660 is 666625212.

It is a super-2 number, since 2×2125266660² = 9033516752215111200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2125266667) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 335442 + ... + 341718.

It is an arithmetic number, because the mean of its divisors is an integer number (31904796).

Almost surely, 2^2125266660 is an apocalyptic number.

2125266660 is a gapful number since it is divisible by the number (20) 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 2125266660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3828575520).

2125266660 is an abundant number, since it is smaller than the sum of its proper divisors (5531884380).

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

2125266660 is a wasteful number, since it uses less digits than its factorization.

2125266660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6328 (or 6317 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 2125266660 is about 46100.6145295266. The cubic root of 2125266660 is about 1285.6945701739.

The spelling of 2125266660 in words is "two billion, one hundred twenty-five million, two hundred sixty-six thousand, six hundred sixty".