1252065106565 has 16 divisors (see below), whose sum is σ = 1849203850368. Its totient is φ = 792515935296.

The previous prime is 1252065106559. The next prime is 1252065106573. The reversal of 1252065106565 is 5656015602521.

It is a cyclic number.

It is not a de Polignac number, because 1252065106565 - 2¹² = 1252065102469 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1375895267 + ... + 1375896176.

It is an arithmetic number, because the mean of its divisors is an integer number (115575240648).

Almost surely, 2^{1252065106565} is an apocalyptic number.

It is an amenable number.

1252065106565 is a deficient number, since it is larger than the sum of its proper divisors (597138743803).

1252065106565 is a wasteful number, since it uses less digits than its factorization.

1252065106565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751791468.

The product of its (nonzero) digits is 540000, while the sum is 44.

The spelling of 1252065106565 in words is "one trillion, two hundred fifty-two billion, sixty-five million, one hundred six thousand, five hundred sixty-five".