2530252778 has 4 divisors (see below), whose sum is σ = 3795379170. Its totient is φ = 1265126388.

The previous prime is 2530252763. The next prime is 2530252787. The reversal of 2530252778 is 8772520352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1538443729 + 991809049 = 39223^2 + 31493^2 .

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 as a sum of consecutive naturals, namely, 632563193 + ... + 632563196.

Almost surely, 2^2530252778 is an apocalyptic number.

2530252778 is a deficient number, since it is larger than the sum of its proper divisors (1265126392).

2530252778 is a wasteful number, since it uses less digits than its factorization.

2530252778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265126391.

The product of its (nonzero) digits is 235200, while the sum is 41.

The square root of 2530252778 is about 50301.6180455460. The cubic root of 2530252778 is about 1362.6614509799.

The spelling of 2530252778 in words is "two billion, five hundred thirty million, two hundred fifty-two thousand, seven hundred seventy-eight".