2278525 has 6 divisors (see below), whose sum is σ = 2825402. Its totient is φ = 1822800.

The previous prime is 2278519. The next prime is 2278543. The reversal of 2278525 is 5258722.

2278525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1444 + 2277081 = 38^2 + 1509^2 .

It is not a de Polignac number, because 2278525 - 2³ = 2278517 is a prime.

It is a Duffinian number.

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 5 ways as a sum of consecutive naturals, for example, 45546 + ... + 45595.

2^2278525 is an apocalyptic number.

2278525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2278525 is a deficient number, since it is larger than the sum of its proper divisors (546877).

2278525 is an equidigital number, since it uses as much as digits as its factorization.

2278525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91151 (or 91146 counting only the distinct ones).

The product of its digits is 11200, while the sum is 31.

The square root of 2278525 is about 1509.4783867283. The cubic root of 2278525 is about 131.5884988856.

The spelling of 2278525 in words is "two million, two hundred seventy-eight thousand, five hundred twenty-five".