2512640261 has 2 divisors, whose sum is σ = 2512640262. Its totient is φ = 2512640260.

The previous prime is 2512640227. The next prime is 2512640279. The reversal of 2512640261 is 1620462152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2088033025 + 424607236 = 45695^2 + 20606^2 .

It is a cyclic number.

It is not a de Polignac number, because 2512640261 - 2⁶ = 2512640197 is a prime.

It is a super-2 number, since 2×2512640261² = 12626722162396296242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2512640561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1256320130 + 1256320131.

It is an arithmetic number, because the mean of its divisors is an integer number (1256320131).

Almost surely, 2^2512640261 is an apocalyptic number.

It is an amenable number.

2512640261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2512640261 is an equidigital number, since it uses as much as digits as its factorization.

2512640261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 2512640261 is about 50126.2432364525. The cubic root of 2512640261 is about 1359.4923604605.

The spelling of 2512640261 in words is "two billion, five hundred twelve million, six hundred forty thousand, two hundred sixty-one".