2530802500 has 30 divisors (see below), whose sum is σ = 5534364374. Its totient is φ = 1012320000.

The previous prime is 2530802473. The next prime is 2530802509. The reversal of 2530802500 is 52080352.

It can be written as a sum of positive squares in 5 ways, for example, as 373571584 + 2157230916 = 19328^2 + 46446^2 .

It is a super-2 number, since 2×2530802500² = 12809922588012500000, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (2530802509) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 503661 + ... + 508660.

Almost surely, 2^2530802500 is an apocalyptic number.

2530802500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2530802500 is an abundant number, since it is smaller than the sum of its proper divisors (3003561874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2530802500 is a wasteful number, since it uses less digits than its factorization.

2530802500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012345 (or 1012328 counting only the distinct ones).

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

The square root of 2530802500 is about 50307.0820064134. The cubic root of 2530802500 is about 1362.7601276474.

Adding to 2530802500 its reverse (52080352), we get a palindrome (2582882852).

It can be divided in two parts, 25 and 30802500, that multiplied together give a square (770062500 = 27750²).

The spelling of 2530802500 in words is "two billion, five hundred thirty million, eight hundred two thousand, five hundred".