5257422565 has 4 divisors (see below), whose sum is σ = 6308907084. Its totient is φ = 4205938048.

The previous prime is 5257422559. The next prime is 5257422571. The reversal of 5257422565 is 5652247525.

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

It is an interprime number because it is at equal distance from previous prime (5257422559) and next prime (5257422571).

It can be written as a sum of positive squares in 2 ways, for example, as 1052937601 + 4204484964 = 32449^2 + 64842^2 .

It is a cyclic number.

It is not a de Polignac number, because 5257422565 - 2¹⁹ = 5256898277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525742252 + ... + 525742261.

It is an arithmetic number, because the mean of its divisors is an integer number (1577226771).

Almost surely, 2^5257422565 is an apocalyptic number.

It is an amenable number.

5257422565 is a deficient number, since it is larger than the sum of its proper divisors (1051484519).

5257422565 is a wasteful number, since it uses less digits than its factorization.

5257422565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051484518.

The product of its digits is 840000, while the sum is 43.

The square root of 5257422565 is about 72508.0862042297. The cubic root of 5257422565 is about 1738.8320171702.

The spelling of 5257422565 in words is "five billion, two hundred fifty-seven million, four hundred twenty-two thousand, five hundred sixty-five".