1252556065 has 8 divisors (see below), whose sum is σ = 1514039400. Its totient is φ = 994730112.

The previous prime is 1252556029. The next prime is 1252556069. The reversal of 1252556065 is 5606552521.

It can be written as a sum of positive squares in 4 ways, for example, as 2862864 + 1249693201 = 1692^2 + 35351^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1252556065 - 2¹³ = 1252547873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1252556069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 913590 + ... + 914959.

It is an arithmetic number, because the mean of its divisors is an integer number (189254925).

Almost surely, 2^1252556065 is an apocalyptic number.

It is an amenable number.

1252556065 is a deficient number, since it is larger than the sum of its proper divisors (261483335).

1252556065 is a wasteful number, since it uses less digits than its factorization.

1252556065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828691.

The product of its (nonzero) digits is 90000, while the sum is 37.

The square root of 1252556065 is about 35391.4688166513. The cubic root of 1252556065 is about 1077.9510951203.

The spelling of 1252556065 in words is "one billion, two hundred fifty-two million, five hundred fifty-six thousand, sixty-five".