2565265124 has 6 divisors (see below), whose sum is σ = 4489213974. Its totient is φ = 1282632560.

The previous prime is 2565265121. The next prime is 2565265127. The reversal of 2565265124 is 4215625652.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2565265121) and next prime (2565265127).

It can be written as a sum of positive squares in only one way, i.e., 2300161600 + 265103524 = 47960^2 + 16282^2 .

It is not an unprimeable number, because it can be changed into a prime (2565265121) by changing a digit.

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 as a sum of consecutive naturals, namely, 320658137 + ... + 320658144.

It is an arithmetic number, because the mean of its divisors is an integer number (748202329).

Almost surely, 2^2565265124 is an apocalyptic number.

It is an amenable number.

2565265124 is a deficient number, since it is larger than the sum of its proper divisors (1923948850).

2565265124 is a wasteful number, since it uses less digits than its factorization.

2565265124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641316285 (or 641316283 counting only the distinct ones).

The product of its digits is 144000, while the sum is 38.

The square root of 2565265124 is about 50648.4464125011. The cubic root of 2565265124 is about 1368.9179521490.

The spelling of 2565265124 in words is "two billion, five hundred sixty-five million, two hundred sixty-five thousand, one hundred twenty-four".