2505120001 has 4 divisors (see below), whose sum is σ = 2546187604. Its totient is φ = 2464052400.

The previous prime is 2505119989. The next prime is 2505120011. The reversal of 2505120001 is 1000215052.

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 772895601 + 1732224400 = 27801^2 + 41620^2 .

It is a cyclic number.

It is not a de Polignac number, because 2505120001 - 2⁹ = 2505119489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2505120011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20533710 + ... + 20533831.

It is an arithmetic number, because the mean of its divisors is an integer number (636546901).

Almost surely, 2^2505120001 is an apocalyptic number.

It is an amenable number.

2505120001 is a deficient number, since it is larger than the sum of its proper divisors (41067603).

2505120001 is an equidigital number, since it uses as much as digits as its factorization.

2505120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41067602.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 2505120001 is about 50051.1738223990. The cubic root of 2505120001 is about 1358.1346979048.

Adding to 2505120001 its reverse (1000215052), we get a palindrome (3505335053).

The spelling of 2505120001 in words is "two billion, five hundred five million, one hundred twenty thousand, one".