2566250137 has 4 divisors (see below), whose sum is σ = 2799545616. Its totient is φ = 2332954660.

The previous prime is 2566250101. The next prime is 2566250171. The reversal of 2566250137 is 7310526652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2566250137 - 2³¹ = 418766489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2566250096 and 2566250105.

It is not an unprimeable number, because it can be changed into a prime (2566250537) 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 3 ways as a sum of consecutive naturals, for example, 116647723 + ... + 116647744.

It is an arithmetic number, because the mean of its divisors is an integer number (699886404).

Almost surely, 2^2566250137 is an apocalyptic number.

It is an amenable number.

2566250137 is a deficient number, since it is larger than the sum of its proper divisors (233295479).

2566250137 is a wasteful number, since it uses less digits than its factorization.

2566250137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233295478.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 2566250137 is about 50658.1694991045. The cubic root of 2566250137 is about 1369.0931425437.

Adding to 2566250137 its reverse (7310526652), we get a palindrome (9876776789).

The spelling of 2566250137 in words is "two billion, five hundred sixty-six million, two hundred fifty thousand, one hundred thirty-seven".