2505451634 has 12 divisors (see below), whose sum is σ = 4371757614. Its totient is φ = 1073764944.

The previous prime is 2505451603. The next prime is 2505451643. The reversal of 2505451634 is 4361545052.

It can be written as a sum of positive squares in only one way, i.e., 1611621025 + 893830609 = 40145^2 + 29897^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2505451594 and 2505451603.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12782819 + ... + 12783014.

Almost surely, 2^2505451634 is an apocalyptic number.

2505451634 is a deficient number, since it is larger than the sum of its proper divisors (1866305980).

2505451634 is a wasteful number, since it uses less digits than its factorization.

2505451634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25565849 (or 25565842 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 2505451634 is about 50054.4866520475. The cubic root of 2505451634 is about 1358.1946261598.

Adding to 2505451634 its reverse (4361545052), we get a palindrome (6866996686).

The spelling of 2505451634 in words is "two billion, five hundred five million, four hundred fifty-one thousand, six hundred thirty-four".