2564252137 has 4 divisors (see below), whose sum is σ = 2715090516. Its totient is φ = 2413413760.

The previous prime is 2564252113. The next prime is 2564252143. The reversal of 2564252137 is 7312524652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 930799081 + 1633453056 = 30509^2 + 40416^2 .

It is a cyclic number.

It is not a de Polignac number, because 2564252137 - 2³¹ = 416768489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2564252096 and 2564252105.

It is not an unprimeable number, because it can be changed into a prime (2564250137) 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 in 3 ways as a sum of consecutive naturals, for example, 75419164 + ... + 75419197.

It is an arithmetic number, because the mean of its divisors is an integer number (678772629).

Almost surely, 2^2564252137 is an apocalyptic number.

It is an amenable number.

2564252137 is a deficient number, since it is larger than the sum of its proper divisors (150838379).

2564252137 is a wasteful number, since it uses less digits than its factorization.

2564252137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150838378.

The product of its digits is 100800, while the sum is 37.

The square root of 2564252137 is about 50638.4452466700. The cubic root of 2564252137 is about 1368.7377396315.

Adding to 2564252137 its reverse (7312524652), we get a palindrome (9876776789).

The spelling of 2564252137 in words is "two billion, five hundred sixty-four million, two hundred fifty-two thousand, one hundred thirty-seven".