2800030525 has 12 divisors (see below), whose sum is σ = 3472699732. Its totient is φ = 2239597440.

The previous prime is 2800030501. The next prime is 2800030531. The reversal of 2800030525 is 5250300082.

It can be written as a sum of positive squares in 6 ways, for example, as 230250276 + 2569780249 = 15174^2 + 50693^2 .

It is not a de Polignac number, because 2800030525 - 2²⁵ = 2766476093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

2800030525 is a modest number, since divided by 30525 gives 2800 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 2800030525.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 225889 + ... + 237961.

Almost surely, 2^2800030525 is an apocalyptic number.

2800030525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2800030525 is a deficient number, since it is larger than the sum of its proper divisors (672669207).

2800030525 is a wasteful number, since it uses less digits than its factorization.

2800030525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21360 (or 21355 counting only the distinct ones).

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

The square root of 2800030525 is about 52915.3146546442. The cubic root of 2800030525 is about 1409.4648682704.

The spelling of 2800030525 in words is "two billion, eight hundred million, thirty thousand, five hundred twenty-five".