2505431304 has 64 divisors (see below), whose sum is σ = 7368926400. Its totient is φ = 786016512.

The previous prime is 2505431297. The next prime is 2505431309. The reversal of 2505431304 is 4031345052.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2505431309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337482 + ... + 344825.

It is an arithmetic number, because the mean of its divisors is an integer number (115139475).

Almost surely, 2^2505431304 is an apocalyptic number.

2505431304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2505431304 is an abundant number, since it is smaller than the sum of its proper divisors (4863495096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2505431304 is a wasteful number, since it uses less digits than its factorization.

2505431304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682339 (or 682329 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 2505431304 is about 50054.2835729371. The cubic root of 2505431304 is about 1358.1909525478.

Adding to 2505431304 its reverse (4031345052), we get a palindrome (6536776356).

The spelling of 2505431304 in words is "two billion, five hundred five million, four hundred thirty-one thousand, three hundred four".