1255566650 has 48 divisors (see below), whose sum is σ = 2596167168. Its totient is φ = 448632000.

The previous prime is 1255566643. The next prime is 1255566677. The reversal of 1255566650 is 566655521.

It is a super-2 number, since 2×1255566650² = 3152895225184445000, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1255566598 and 1255566607.

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 23 ways as a sum of consecutive naturals, for example, 11006 + ... + 51305.

It is an arithmetic number, because the mean of its divisors is an integer number (54086816).

Almost surely, 2^1255566650 is an apocalyptic number.

1255566650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1255566650 is an abundant number, since it is smaller than the sum of its proper divisors (1340600518).

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

1255566650 is a wasteful number, since it uses less digits than its factorization.

1255566650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62367 (or 62362 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 41.

The square root of 1255566650 is about 35433.9759270675. The cubic root of 1255566650 is about 1078.8140416716.

The spelling of 1255566650 in words is "one billion, two hundred fifty-five million, five hundred sixty-six thousand, six hundred fifty".