2565003436 has 6 divisors (see below), whose sum is σ = 4488756020. Its totient is φ = 1282501716.

The previous prime is 2565003403. The next prime is 2565003437. The reversal of 2565003436 is 6343005652.

It is not an unprimeable number, because it can be changed into a prime (2565003437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320625426 + ... + 320625433.

Almost surely, 2^2565003436 is an apocalyptic number.

It is an amenable number.

2565003436 is a deficient number, since it is larger than the sum of its proper divisors (1923752584).

2565003436 is a wasteful number, since it uses less digits than its factorization.

2565003436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641250863 (or 641250861 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 34.

The square root of 2565003436 is about 50645.8629702368. The cubic root of 2565003436 is about 1368.8714018491.

The spelling of 2565003436 in words is "two billion, five hundred sixty-five million, three thousand, four hundred thirty-six".