2891925 has 18 divisors (see below), whose sum is σ = 5180162. Its totient is φ = 1542240.

The previous prime is 2891899. The next prime is 2891927. The reversal of 2891925 is 5291982.

It can be written as a sum of positive squares in 3 ways, for example, as 39204 + 2852721 = 198^2 + 1689^2 .

It is not a de Polignac number, because 2891925 - 2⁵ = 2891893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2891925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2891927) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6202 + ... + 6651.

2^2891925 is an apocalyptic number.

2891925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2891925 is a deficient number, since it is larger than the sum of its proper divisors (2288237).

2891925 is a wasteful number, since it uses less digits than its factorization.

2891925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12869 (or 12861 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 2891925 is about 1700.5660822209. The cubic root of 2891925 is about 142.4718319208.

The spelling of 2891925 in words is "two million, eight hundred ninety-one thousand, nine hundred twenty-five".