2503825 has 6 divisors (see below), whose sum is σ = 3104774. Its totient is φ = 2003040.

The previous prime is 2503817. The next prime is 2503841. The reversal of 2503825 is 5283052.

It can be written as a sum of positive squares in 3 ways, for example, as 524176 + 1979649 = 724^2 + 1407^2 .

It is not a de Polignac number, because 2503825 - 2³ = 2503817 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 100153 = 2503825 / (2 + 5 + 0 + 3 + 8 + 2 + 5).

It is a d-powerful number, because it can be written as 2¹⁶ + 5⁴ + 0 + 3⁵ + 8⁶ + 2²¹ + 5⁷ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2503825.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50052 + ... + 50101.

2^2503825 is an apocalyptic number.

2503825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2503825 is a deficient number, since it is larger than the sum of its proper divisors (600949).

2503825 is a wasteful number, since it uses less digits than its factorization.

2503825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100163 (or 100158 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2503825 is about 1582.3479389818. The cubic root of 2503825 is about 135.7900632079.

Adding to 2503825 its reverse (5283052), we get a palindrome (7786877).

The spelling of 2503825 in words is "two million, five hundred three thousand, eight hundred twenty-five".