1265855002 has 8 divisors (see below), whose sum is σ = 1981338336. Its totient is φ = 605408892.

The previous prime is 1265854973. The next prime is 1265855011. The reversal of 1265855002 is 2005585621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13759248 + ... + 13759339.

It is an arithmetic number, because the mean of its divisors is an integer number (247667292).

Almost surely, 2^1265855002 is an apocalyptic number.

1265855002 is a deficient number, since it is larger than the sum of its proper divisors (715483334).

1265855002 is a wasteful number, since it uses less digits than its factorization.

1265855002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27518612.

The product of its (nonzero) digits is 24000, while the sum is 34.

The square root of 1265855002 is about 35578.8561086497. The cubic root of 1265855002 is about 1081.7526987564.

The spelling of 1265855002 in words is "one billion, two hundred sixty-five million, eight hundred fifty-five thousand, two".