2540825 has 12 divisors (see below), whose sum is σ = 3600960. Its totient is φ = 1742160.

The previous prime is 2540821. The next prime is 2540831. The reversal of 2540825 is 5280452.

It is not a de Polignac number, because 2540825 - 2² = 2540821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2540794 and 2540803.

It is not an unprimeable number, because it can be changed into a prime (2540821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7085 + ... + 7434.

It is an arithmetic number, because the mean of its divisors is an integer number (300080).

2^2540825 is an apocalyptic number.

2540825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2540825 is a deficient number, since it is larger than the sum of its proper divisors (1060135).

2540825 is a wasteful number, since it uses less digits than its factorization.

2540825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14536 (or 14531 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 2540825 is about 1593.9965495571. The cubic root of 2540825 is about 136.4556695218.

Adding to 2540825 its product of nonzero digits (3200), we get a square (2544025 = 1595²).

The spelling of 2540825 in words is "two million, five hundred forty thousand, eight hundred twenty-five".