2585403172 has 24 divisors (see below), whose sum is σ = 4971808800. Its totient is φ = 1166602560.

The previous prime is 2585403137. The next prime is 2585403179. The reversal of 2585403172 is 2713045852.

It is a super-3 number, since 3×2585403172³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2585403179) 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, 208422 + ... + 220477.

It is an arithmetic number, because the mean of its divisors is an integer number (207158700).

Almost surely, 2^2585403172 is an apocalyptic number.

2585403172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2585403172 is a deficient number, since it is larger than the sum of its proper divisors (2386405628).

2585403172 is a wasteful number, since it uses less digits than its factorization.

2585403172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429051 (or 429049 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 2585403172 is about 50846.8600013806. The cubic root of 2585403172 is about 1372.4907487186.

The spelling of 2585403172 in words is "two billion, five hundred eighty-five million, four hundred three thousand, one hundred seventy-two".