2531425 has 12 divisors (see below), whose sum is σ = 3380860. Its totient is φ = 1869120.

The previous prime is 2531423. The next prime is 2531443. The reversal of 2531425 is 5241352.

It can be written as a sum of positive squares in 6 ways, for example, as 208849 + 2322576 = 457^2 + 1524^2 .

It is not a de Polignac number, because 2531425 - 2¹ = 2531423 is a prime.

It is a super-2 number, since 2×2531425² = 12816225061250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2531396 and 2531405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531423) 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, 3570 + ... + 4219.

2^2531425 is an apocalyptic number.

2531425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2531425 is a deficient number, since it is larger than the sum of its proper divisors (849435).

2531425 is a wasteful number, since it uses less digits than its factorization.

2531425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7812 (or 7807 counting only the distinct ones).

The product of its digits is 1200, while the sum is 22.

The square root of 2531425 is about 1591.0452539133. The cubic root of 2531425 is about 136.2871850923.

Adding to 2531425 its reverse (5241352), we get a palindrome (7772777).

The spelling of 2531425 in words is "two million, five hundred thirty-one thousand, four hundred twenty-five".