2505631634 has 32 divisors (see below), whose sum is σ = 4171450752. Its totient is φ = 1119280000.

The previous prime is 2505631627. The next prime is 2505631679. The reversal of 2505631634 is 4361365052.

2505631634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2505631594 and 2505631603.

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, 300299 + ... + 308529.

It is an arithmetic number, because the mean of its divisors is an integer number (130357836).

Almost surely, 2^2505631634 is an apocalyptic number.

2505631634 is a deficient number, since it is larger than the sum of its proper divisors (1665819118).

2505631634 is a wasteful number, since it uses less digits than its factorization.

2505631634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8482.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 2505631634 is about 50056.2846603701. The cubic root of 2505631634 is about 1358.2271511246.

Adding to 2505631634 its reverse (4361365052), we get a palindrome (6866996686).

The spelling of 2505631634 in words is "two billion, five hundred five million, six hundred thirty-one thousand, six hundred thirty-four".