1265656 has 32 divisors (see below), whose sum is σ = 2751840. Its totient is φ = 534528.

The previous prime is 1265653. The next prime is 1265657. The reversal of 1265656 is 6565621.

It is a super-2 number, since 2×1265656² = 3203770220672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5316 + ... + 5548.

It is an arithmetic number, because the mean of its divisors is an integer number (85995).

2^1265656 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 1265656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1375920).

1265656 is an abundant number, since it is smaller than the sum of its proper divisors (1486184).

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

1265656 is a wasteful number, since it uses less digits than its factorization.

1265656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343 (or 339 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The square root of 1265656 is about 1125.0137776934. The cubic root of 1265656 is about 108.1696009211.

Subtracting from 1265656 its sum of digits (31), we obtain a square (1265625 = 1125²).

The spelling of 1265656 in words is "one million, two hundred sixty-five thousand, six hundred fifty-six".