2565401122373 has 2 divisors, whose sum is σ = 2565401122374. Its totient is φ = 2565401122372.

The previous prime is 2565401122367. The next prime is 2565401122393. The reversal of 2565401122373 is 3732211045652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2556410858884 + 8990263489 = 1598878^2 + 94817^2 .

It is a cyclic number.

It is not a de Polignac number, because 2565401122373 - 2¹⁶ = 2565401056837 is a prime.

It is a super-2 number, since 2×2565401122373² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2565401122373.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2565401122393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282700561186 + 1282700561187.

It is an arithmetic number, because the mean of its divisors is an integer number (1282700561187).

Almost surely, 2^{2565401122373} is an apocalyptic number.

It is an amenable number.

2565401122373 is a deficient number, since it is larger than the sum of its proper divisors (1).

2565401122373 is an equidigital number, since it uses as much as digits as its factorization.

2565401122373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 2565401122373 in words is "two trillion, five hundred sixty-five billion, four hundred one million, one hundred twenty-two thousand, three hundred seventy-three".