2540425 has 12 divisors (see below), whose sum is σ = 3169936. Its totient is φ = 2019600.

The previous prime is 2540423. The next prime is 2540431. The reversal of 2540425 is 5240452.

It is not a de Polignac number, because 2540425 - 2¹ = 2540423 is a prime.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2540396 and 2540405.

It is not an unprimeable number, because it can be changed into a prime (2540423) 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, 7510 + ... + 7840.

2^2540425 is an apocalyptic number.

2540425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2540425 is a deficient number, since it is larger than the sum of its proper divisors (629511).

2540425 is a wasteful number, since it uses less digits than its factorization.

2540425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 2540425 is about 1593.8710738325. The cubic root of 2540425 is about 136.4485084445.

Adding to 2540425 its reverse (5240452), we get a palindrome (7780877).

The spelling of 2540425 in words is "two million, five hundred forty thousand, four hundred twenty-five".