2506025761 has 4 divisors (see below), whose sum is σ = 2515777092. Its totient is φ = 2496274432.

The previous prime is 2506025737. The next prime is 2506025791. The reversal of 2506025761 is 1675206052.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2092513536 + 413512225 = 45744^2 + 20335^2 .

It is a cyclic number.

It is not a de Polignac number, because 2506025761 - 2¹⁹ = 2505501473 is a prime.

It is a super-2 number, since 2×2506025761² = 12560330229591258242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2506025791) 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 3 ways as a sum of consecutive naturals, for example, 4875280 + ... + 4875793.

It is an arithmetic number, because the mean of its divisors is an integer number (628944273).

Almost surely, 2^2506025761 is an apocalyptic number.

It is an amenable number.

2506025761 is a deficient number, since it is larger than the sum of its proper divisors (9751331).

2506025761 is an equidigital number, since it uses as much as digits as its factorization.

2506025761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9751330.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 2506025761 is about 50060.2213438974. The cubic root of 2506025761 is about 1358.2983621677.

The spelling of 2506025761 in words is "two billion, five hundred six million, twenty-five thousand, seven hundred sixty-one".