2565212215 has 8 divisors (see below), whose sum is σ = 3094205328. Its totient is φ = 2041536000.

The previous prime is 2565212159. The next prime is 2565212227. The reversal of 2565212215 is 5122125652.

It is a happy number.

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

It is not a de Polignac number, because 2565212215 - 2³¹ = 417728567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1328161 + ... + 1330090.

It is an arithmetic number, because the mean of its divisors is an integer number (386775666).

Almost surely, 2^2565212215 is an apocalyptic number.

2565212215 is a deficient number, since it is larger than the sum of its proper divisors (528993113).

2565212215 is a wasteful number, since it uses less digits than its factorization.

2565212215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2658449.

The product of its digits is 12000, while the sum is 31.

The square root of 2565212215 is about 50647.9240936882. The cubic root of 2565212215 is about 1368.9085407011.

Adding to 2565212215 its reverse (5122125652), we get a palindrome (7687337867).

The spelling of 2565212215 in words is "two billion, five hundred sixty-five million, two hundred twelve thousand, two hundred fifteen".