2780525 has 12 divisors (see below), whose sum is σ = 3761664. Its totient is φ = 2022000.

The previous prime is 2780521. The next prime is 2780527. The reversal of 2780525 is 5250872.

It is not a de Polignac number, because 2780525 - 2² = 2780521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4781 + ... + 5330.

It is an arithmetic number, because the mean of its divisors is an integer number (313472).

2^2780525 is an apocalyptic number.

2780525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2780525 is a deficient number, since it is larger than the sum of its proper divisors (981139).

2780525 is a wasteful number, since it uses less digits than its factorization.

2780525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10132 (or 10127 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 2780525 is about 1667.4906296588. The cubic root of 2780525 is about 140.6184375538.

The spelling of 2780525 in words is "two million, seven hundred eighty thousand, five hundred twenty-five".