2780826025 has 24 divisors (see below), whose sum is σ = 3550882104. Its totient is φ = 2159001600.

The previous prime is 2780825987. The next prime is 2780826079. The reversal of 2780826025 is 5206280872.

It can be written as a sum of positive squares in 12 ways, for example, as 2512816384 + 268009641 = 50128^2 + 16371^2 .

It is not a de Polignac number, because 2780826025 - 2⁷ = 2780825897 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190797 + ... + 204853.

It is an arithmetic number, because the mean of its divisors is an integer number (147953421).

Almost surely, 2^2780826025 is an apocalyptic number.

2780826025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2780826025 is a deficient number, since it is larger than the sum of its proper divisors (770056079).

2780826025 is a wasteful number, since it uses less digits than its factorization.

2780826025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14301 (or 14296 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 2780826025 is about 52733.5379526161. The cubic root of 2780826025 is about 1406.2351191183.

The spelling of 2780826025 in words is "two billion, seven hundred eighty million, eight hundred twenty-six thousand, twenty-five".