1020255660 has 72 divisors (see below), whose sum is σ = 3115353696. Its totient is φ = 270259200.

The previous prime is 1020255653. The next prime is 1020255661. The reversal of 1020255660 is 665520201.

1020255660 is a `hidden beast` number, since 102 + 0 + 2 + 556 + 6 + 0 = 666.

1020255660 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1020255660² = 2081843223524071200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1020255661) 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, 8412 + ... + 45948.

Almost surely, 2^1020255660 is an apocalyptic number.

1020255660 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 1020255660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1557676848).

1020255660 is an abundant number, since it is smaller than the sum of its proper divisors (2095098036).

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

1020255660 is a wasteful number, since it uses less digits than its factorization.

1020255660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37703 (or 37698 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1020255660 is about 31941.4411071260. The cubic root of 1020255660 is about 1006.7068048749.

Adding to 1020255660 its reverse (665520201), we get a palindrome (1685775861).

The spelling of 1020255660 in words is "one billion, twenty million, two hundred fifty-five thousand, six hundred sixty".