2585355420 has 24 divisors (see below), whose sum is σ = 7238995344. Its totient is φ = 689428096.

The previous prime is 2585355361. The next prime is 2585355439. The reversal of 2585355420 is 245535852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21544569 + ... + 21544688.

It is an arithmetic number, because the mean of its divisors is an integer number (301624806).

Almost surely, 2^2585355420 is an apocalyptic number.

2585355420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2585355420 is an abundant number, since it is smaller than the sum of its proper divisors (4653639924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2585355420 is a wasteful number, since it uses less digits than its factorization.

2585355420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43089269 (or 43089267 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 39.

The square root of 2585355420 is about 50846.3904323601. The cubic root of 2585355420 is about 1372.4822987687.

The spelling of 2585355420 in words is "two billion, five hundred eighty-five million, three hundred fifty-five thousand, four hundred twenty".