2505533623 has 4 divisors (see below), whose sum is σ = 2528520280. Its totient is φ = 2482546968.

The previous prime is 2505533609. The next prime is 2505533633. The reversal of 2505533623 is 3263355052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2505533623 - 2¹⁷ = 2505402551 is a prime.

It is a super-2 number, since 2×2505533623² = 12555397471967012258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505533603) 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, 11493165 + ... + 11493382.

It is an arithmetic number, because the mean of its divisors is an integer number (632130070).

Almost surely, 2^2505533623 is an apocalyptic number.

2505533623 is a deficient number, since it is larger than the sum of its proper divisors (22986657).

2505533623 is a wasteful number, since it uses less digits than its factorization.

2505533623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22986656.

The product of its (nonzero) digits is 81000, while the sum is 34.

The square root of 2505533623 is about 50055.3056428587. The cubic root of 2505533623 is about 1358.2094412937.

Adding to 2505533623 its reverse (3263355052), we get a palindrome (5768888675).

The spelling of 2505533623 in words is "two billion, five hundred five million, five hundred thirty-three thousand, six hundred twenty-three".