1265530 has 32 divisors (see below), whose sum is σ = 2643840. Its totient is φ = 427200.

The previous prime is 1265527. The next prime is 1265549. The reversal of 1265530 is 355621.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6981 + ... + 7159.

It is an arithmetic number, because the mean of its divisors is an integer number (82620).

2^1265530 is an apocalyptic number.

1265530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1265530 is an abundant number, since it is smaller than the sum of its proper divisors (1378310).

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

1265530 is a wasteful number, since it uses less digits than its factorization.

1265530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1265530 is about 1124.9577769854. The cubic root of 1265530 is about 108.1660112617.

Subtracting from 1265530 its reverse (355621), we obtain a palindrome (909909).

The spelling of 1265530 in words is "one million, two hundred sixty-five thousand, five hundred thirty".