2565312001 has 8 divisors (see below), whose sum is σ = 2932750080. Its totient is φ = 2198115168.

The previous prime is 2565311993. The next prime is 2565312049. The reversal of 2565312001 is 1002135652.

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 2565312001 - 2³ = 2565311993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2565312301) 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, 36916 + ... + 80581.

It is an arithmetic number, because the mean of its divisors is an integer number (366593760).

Almost surely, 2^2565312001 is an apocalyptic number.

It is an amenable number.

2565312001 is a deficient number, since it is larger than the sum of its proper divisors (367438079).

2565312001 is a wasteful number, since it uses less digits than its factorization.

2565312001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120623.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2565312001 is about 50648.9091787770. The cubic root of 2565312001 is about 1368.9262905173.

Adding to 2565312001 its reverse (1002135652), we get a palindrome (3567447653).

The spelling of 2565312001 in words is "two billion, five hundred sixty-five million, three hundred twelve thousand, one".