2525391 has 24 divisors (see below), whose sum is σ = 4117680. Its totient is φ = 1528560.

The previous prime is 2525389. The next prime is 2525417. The reversal of 2525391 is 1935252.

2525391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2525391 - 2¹ = 2525389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2525351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2881 + ... + 3653.

It is an arithmetic number, because the mean of its divisors is an integer number (171570).

2^2525391 is an apocalyptic number.

2525391 is a deficient number, since it is larger than the sum of its proper divisors (1592289).

2525391 is a wasteful number, since it uses less digits than its factorization.

2525391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804 (or 787 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 2525391 is about 1589.1478848742. The cubic root of 2525391 is about 136.1788125167.

It can be divided in two parts, 2525 and 391, that added together give a square (2916 = 54²).

The spelling of 2525391 in words is "two million, five hundred twenty-five thousand, three hundred ninety-one".