2509525 has 12 divisors (see below), whose sum is σ = 3197092. Its totient is φ = 1952640.

The previous prime is 2509519. The next prime is 2509531. The reversal of 2509525 is 5259052.

2509525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2509519) and next prime (2509531).

It can be written as a sum of positive squares in 6 ways, for example, as 418609 + 2090916 = 647^2 + 1446^2 .

It is not a de Polignac number, because 2509525 - 2³ = 2509517 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2509493 and 2509502.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 432 + ... + 2281.

2^2509525 is an apocalyptic number.

2509525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2509525 is a deficient number, since it is larger than the sum of its proper divisors (687567).

2509525 is a wasteful number, since it uses less digits than its factorization.

2509525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760 (or 2755 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 2509525 is about 1584.1480360118. The cubic root of 2509525 is about 135.8930279064.

The spelling of 2509525 in words is "two million, five hundred nine thousand, five hundred twenty-five".