2585509231 has 2 divisors, whose sum is σ = 2585509232. Its totient is φ = 2585509230.

The previous prime is 2585509219. The next prime is 2585509237. The reversal of 2585509231 is 1329055852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2585509231 - 2¹⁵ = 2585476463 is a prime.

It is a super-2 number, since 2×2585509231² = 13369715967172422722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2585509237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1292754615 + 1292754616.

It is an arithmetic number, because the mean of its divisors is an integer number (1292754616).

Almost surely, 2^2585509231 is an apocalyptic number.

2585509231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2585509231 is an equidigital number, since it uses as much as digits as its factorization.

2585509231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108000, while the sum is 40.

The square root of 2585509231 is about 50847.9029164429. The cubic root of 2585509231 is about 1372.5095160051.

The spelling of 2585509231 in words is "two billion, five hundred eighty-five million, five hundred nine thousand, two hundred thirty-one".