2505320404 has 6 divisors (see below), whose sum is σ = 4384310714. Its totient is φ = 1252660200.

The previous prime is 2505320399. The next prime is 2505320429. The reversal of 2505320404 is 4040235052.

It can be written as a sum of positive squares in only one way, i.e., 2352056004 + 153264400 = 48498^2 + 12380^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313165047 + ... + 313165054.

Almost surely, 2^2505320404 is an apocalyptic number.

It is an amenable number.

2505320404 is a deficient number, since it is larger than the sum of its proper divisors (1878990310).

2505320404 is a wasteful number, since it uses less digits than its factorization.

2505320404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626330105 (or 626330103 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 2505320404 is about 50053.1757633819. The cubic root of 2505320404 is about 1358.1709126717.

Adding to 2505320404 its reverse (4040235052), we get a palindrome (6545555456).

The spelling of 2505320404 in words is "two billion, five hundred five million, three hundred twenty thousand, four hundred four".