2565400022 has 32 divisors (see below), whose sum is σ = 4019258880. Its totient is φ = 1227264480.

The previous prime is 2565400003. The next prime is 2565400043. The reversal of 2565400022 is 2200045652.

It is a junction number, because it is equal to n+sod(n) for n = 2565399964 and 2565400000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 693197 + ... + 696887.

It is an arithmetic number, because the mean of its divisors is an integer number (125601840).

Almost surely, 2^2565400022 is an apocalyptic number.

2565400022 is a deficient number, since it is larger than the sum of its proper divisors (1453858858).

2565400022 is a wasteful number, since it uses less digits than its factorization.

2565400022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3908.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2565400022 is about 50649.7781041536. The cubic root of 2565400022 is about 1368.9419472071.

Adding to 2565400022 its reverse (2200045652), we get a palindrome (4765445674).

The spelling of 2565400022 in words is "two billion, five hundred sixty-five million, four hundred thousand, twenty-two".