2585655428 has 24 divisors (see below), whose sum is σ = 4724697600. Its totient is φ = 1236575648.

The previous prime is 2585655421. The next prime is 2585655439. The reversal of 2585655428 is 8245565852.

It is a super-2 number, since 2×2585655428² = 13371227984691726368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2585655421) 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, 91748 + ... + 116571.

It is an arithmetic number, because the mean of its divisors is an integer number (196862400).

Almost surely, 2^2585655428 is an apocalyptic number.

It is an amenable number.

2585655428 is a deficient number, since it is larger than the sum of its proper divisors (2139042172).

2585655428 is a wasteful number, since it uses less digits than its factorization.

2585655428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208459 (or 208457 counting only the distinct ones).

The product of its digits is 3840000, while the sum is 50.

The square root of 2585655428 is about 50849.3404873652. The cubic root of 2585655428 is about 1372.5353849248.

The spelling of 2585655428 in words is "two billion, five hundred eighty-five million, six hundred fifty-five thousand, four hundred twenty-eight".