2505643430 has 32 divisors (see below), whose sum is σ = 5026808160. Its totient is φ = 893652480.

The previous prime is 2505643429. The next prime is 2505643457. The reversal of 2505643430 is 343465052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 384641 + ... + 391100.

It is an arithmetic number, because the mean of its divisors is an integer number (157087755).

Almost surely, 2^2505643430 is an apocalyptic number.

2505643430 is an abundant number, since it is smaller than the sum of its proper divisors (2521164730).

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

2505643430 is a wasteful number, since it uses less digits than its factorization.

2505643430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775784.

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 2505643430 is about 50056.4024875939. The cubic root of 2505643430 is about 1358.2292825395.

It can be divided in two parts, 25056 and 43430, that added together give a palindrome (68486).

The spelling of 2505643430 in words is "two billion, five hundred five million, six hundred forty-three thousand, four hundred thirty".