2565340437 has 16 divisors (see below), whose sum is σ = 3760791552. Its totient is φ = 1542507120.

The previous prime is 2565340433. The next prime is 2565340441. The reversal of 2565340437 is 7340435652.

It is an interprime number because it is at equal distance from previous prime (2565340433) and next prime (2565340441).

It is not a de Polignac number, because 2565340437 - 2² = 2565340433 is a prime.

It is a super-4 number, since 4×2565340437⁴ (a number of 39 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2565340395 and 2565340404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565340433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301863 + ... + 310244.

It is an arithmetic number, because the mean of its divisors is an integer number (235049472).

Almost surely, 2^2565340437 is an apocalyptic number.

It is an amenable number.

2565340437 is a deficient number, since it is larger than the sum of its proper divisors (1195451115).

2565340437 is a wasteful number, since it uses less digits than its factorization.

2565340437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612248.

The product of its (nonzero) digits is 302400, while the sum is 39.

The square root of 2565340437 is about 50649.1898948048. The cubic root of 2565340437 is about 1368.9313485953.

The spelling of 2565340437 in words is "two billion, five hundred sixty-five million, three hundred forty thousand, four hundred thirty-seven".