2585437390 has 16 divisors (see below), whose sum is σ = 4699866240. Its totient is φ = 1023935200.

The previous prime is 2585437243. The next prime is 2585437397. The reversal of 2585437390 is 937345852.

It is a super-2 number, since 2×2585437390² = 13368972995220024200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2585437390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2585437397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1278910 + ... + 1280929.

It is an arithmetic number, because the mean of its divisors is an integer number (293741640).

Almost surely, 2^2585437390 is an apocalyptic number.

2585437390 is a deficient number, since it is larger than the sum of its proper divisors (2114428850).

2585437390 is a wasteful number, since it uses less digits than its factorization.

2585437390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2559947.

The product of its (nonzero) digits is 907200, while the sum is 46.

The square root of 2585437390 is about 50847.1964812220. The cubic root of 2585437390 is about 1372.4968036970.

The spelling of 2585437390 in words is "two billion, five hundred eighty-five million, four hundred thirty-seven thousand, three hundred ninety".