2605204631 has 8 divisors (see below), whose sum is σ = 2617711344. Its totient is φ = 2592716800.

The previous prime is 2605204621. The next prime is 2605204643. The reversal of 2605204631 is 1364025062.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2605204631 is a prime.

It is a super-2 number, since 2×2605204631² = 13574182338767692322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2605204594 and 2605204603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2605204621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325781 + ... + 333681.

It is an arithmetic number, because the mean of its divisors is an integer number (327213918).

Almost surely, 2^2605204631 is an apocalyptic number.

2605204631 is a deficient number, since it is larger than the sum of its proper divisors (12506713).

2605204631 is a wasteful number, since it uses less digits than its factorization.

2605204631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9441.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 2605204631 is about 51041.2052267577. The cubic root of 2605204631 is about 1375.9857845045.

Adding to 2605204631 its reverse (1364025062), we get a palindrome (3969229693).

The spelling of 2605204631 in words is "two billion, six hundred five million, two hundred four thousand, six hundred thirty-one".