2585191925 has 6 divisors (see below), whose sum is σ = 3205638018. Its totient is φ = 2068153520.

The previous prime is 2585191919. The next prime is 2585191937. The reversal of 2585191925 is 5291915852.

It can be written as a sum of positive squares in 3 ways, for example, as 5466244 + 2579725681 = 2338^2 + 50791^2 .

It is not a de Polignac number, because 2585191925 - 2¹⁶ = 2585126389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2585191925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51703814 + ... + 51703863.

It is an arithmetic number, because the mean of its divisors is an integer number (534273003).

Almost surely, 2^2585191925 is an apocalyptic number.

2585191925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2585191925 is a deficient number, since it is larger than the sum of its proper divisors (620446093).

2585191925 is a wasteful number, since it uses less digits than its factorization.

2585191925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103407687 (or 103407682 counting only the distinct ones).

The product of its digits is 324000, while the sum is 47.

The square root of 2585191925 is about 50844.7826723647. The cubic root of 2585191925 is about 1372.4533667410.

The spelling of 2585191925 in words is "two billion, five hundred eighty-five million, one hundred ninety-one thousand, nine hundred twenty-five".