2505308401 has 4 divisors (see below), whose sum is σ = 2505687012. Its totient is φ = 2504929792.

The previous prime is 2505308371. The next prime is 2505308413. The reversal of 2505308401 is 1048035052.

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 2002652001 + 502656400 = 44751^2 + 22420^2 .

It is a cyclic number.

It is not a de Polignac number, because 2505308401 - 2¹⁷ = 2505177329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2505308401.

It is not an unprimeable number, because it can be changed into a prime (2505308461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179200 + ... + 192673.

It is an arithmetic number, because the mean of its divisors is an integer number (626421753).

Almost surely, 2^2505308401 is an apocalyptic number.

It is an amenable number.

2505308401 is a deficient number, since it is larger than the sum of its proper divisors (378611).

2505308401 is an equidigital number, since it uses as much as digits as its factorization.

2505308401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378610.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 2505308401 is about 50053.0558607564. The cubic root of 2505308401 is about 1358.1687436675.

The spelling of 2505308401 in words is "two billion, five hundred five million, three hundred eight thousand, four hundred one".