1265041252 has 12 divisors (see below), whose sum is σ = 2265306736. Its totient is φ = 617810760.

The previous prime is 1265041249. The next prime is 1265041289. The reversal of 1265041252 is 2521405621.

It is a self number, because there is not a number n which added to its sum of digits gives 1265041252.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3677274 + ... + 3677617.

Almost surely, 2^1265041252 is an apocalyptic number.

It is an amenable number.

1265041252 is a deficient number, since it is larger than the sum of its proper divisors (1000265484).

1265041252 is a wasteful number, since it uses less digits than its factorization.

1265041252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7354938 (or 7354936 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1265041252 is about 35567.4184050516. The cubic root of 1265041252 is about 1081.5208488863.

Adding to 1265041252 its reverse (2521405621), we get a palindrome (3786446873).

The spelling of 1265041252 in words is "one billion, two hundred sixty-five million, forty-one thousand, two hundred fifty-two".