2520425 has 12 divisors (see below), whose sum is σ = 3148236. Its totient is φ = 2001600.

The previous prime is 2520383. The next prime is 2520431. The reversal of 2520425 is 5240252.

It can be written as a sum of positive squares in 6 ways, for example, as 1106704 + 1413721 = 1052^2 + 1189^2 .

It is not a de Polignac number, because 2520425 - 2⁸ = 2520169 is a prime.

It is a super-3 number, since 3×2520425³ = 48033318376805296875, which contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2520397 and 2520406.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4247 + ... + 4803.

It is an arithmetic number, because the mean of its divisors is an integer number (262353).

2^2520425 is an apocalyptic number.

2520425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2520425 is a deficient number, since it is larger than the sum of its proper divisors (627811).

2520425 is a wasteful number, since it uses less digits than its factorization.

2520425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 743 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 2520425 is about 1587.5846434128. The cubic root of 2520425 is about 136.0894919926.

Adding to 2520425 its reverse (5240252), we get a palindrome (7760677).

The spelling of 2520425 in words is "two million, five hundred twenty thousand, four hundred twenty-five".