2565621022 has 8 divisors (see below), whose sum is σ = 3857004000. Its totient is φ = 1279953024.

The previous prime is 2565620999. The next prime is 2565621041. The reversal of 2565621022 is 2201265652.

It is a happy number.

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

It is a super-2 number, since 2×2565621022² = 13164822457056648968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1427622 + ... + 1429417.

It is an arithmetic number, because the mean of its divisors is an integer number (482125500).

Almost surely, 2^2565621022 is an apocalyptic number.

2565621022 is a deficient number, since it is larger than the sum of its proper divisors (1291382978).

2565621022 is a wasteful number, since it uses less digits than its factorization.

2565621022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857490.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 2565621022 is about 50651.9597054250. The cubic root of 2565621022 is about 1368.9812558894.

Adding to 2565621022 its reverse (2201265652), we get a palindrome (4766886674).

The spelling of 2565621022 in words is "two billion, five hundred sixty-five million, six hundred twenty-one thousand, twenty-two".