1265211002 has 16 divisors (see below), whose sum is σ = 2160361152. Its totient is φ = 550091520.

The previous prime is 1265210987. The next prime is 1265211019. The reversal of 1265211002 is 2001125621.

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 7 ways as a sum of consecutive naturals, for example, 1249703 + ... + 1250714.

It is an arithmetic number, because the mean of its divisors is an integer number (135022572).

Almost surely, 2^1265211002 is an apocalyptic number.

1265211002 is a deficient number, since it is larger than the sum of its proper divisors (895150150).

1265211002 is a wasteful number, since it uses less digits than its factorization.

1265211002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500453.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1265211002 is about 35569.8046382040. The cubic root of 1265211002 is about 1081.5692214730.

Adding to 1265211002 its reverse (2001125621), we get a palindrome (3266336623).

The spelling of 1265211002 in words is "one billion, two hundred sixty-five million, two hundred eleven thousand, two".