2591225 has 48 divisors (see below), whose sum is σ = 4249728. Its totient is φ = 1520640.

The previous prime is 2591213. The next prime is 2591233. The reversal of 2591225 is 5221952.

It is not a de Polignac number, because 2591225 - 2⁴ = 2591209 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2591194 and 2591203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38642 + ... + 38708.

It is an arithmetic number, because the mean of its divisors is an integer number (88536).

2^2591225 is an apocalyptic number.

2591225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2591225 is a deficient number, since it is larger than the sum of its proper divisors (1658503).

2591225 is a wasteful number, since it uses less digits than its factorization.

2591225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 109 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 2591225 is about 1609.7282379333. The cubic root of 2591225 is about 137.3520171007.

The spelling of 2591225 in words is "two million, five hundred ninety-one thousand, two hundred twenty-five".