2520578251 has 2 divisors, whose sum is σ = 2520578252. Its totient is φ = 2520578250.

The previous prime is 2520578191. The next prime is 2520578309. The reversal of 2520578251 is 1528750252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2520578251 - 2¹¹ = 2520576203 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2520578251.

It is not a weakly prime, because it can be changed into another prime (2520578351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260289125 + 1260289126.

It is an arithmetic number, because the mean of its divisors is an integer number (1260289126).

Almost surely, 2^2520578251 is an apocalyptic number.

2520578251 is a deficient number, since it is larger than the sum of its proper divisors (1).

2520578251 is an equidigital number, since it uses as much as digits as its factorization.

2520578251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56000, while the sum is 37.

The square root of 2520578251 is about 50205.3607795024. The cubic root of 2520578251 is about 1360.9225018194.

The spelling of 2520578251 in words is "two billion, five hundred twenty million, five hundred seventy-eight thousand, two hundred fifty-one".