2505682394 has 16 divisors (see below), whose sum is σ = 3981662568. Its totient is φ = 1178537472.

The previous prime is 2505682393. The next prime is 2505682397. The reversal of 2505682394 is 4932865052.

It can be written as a sum of positive squares in 4 ways, for example, as 2453914369 + 51768025 = 49537^2 + 7195^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2505682391) 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, 51854 + ... + 87750.

Almost surely, 2^2505682394 is an apocalyptic number.

2505682394 is a deficient number, since it is larger than the sum of its proper divisors (1475980174).

2505682394 is a wasteful number, since it uses less digits than its factorization.

2505682394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37969.

The product of its (nonzero) digits is 518400, while the sum is 44.

The square root of 2505682394 is about 50056.7916870428. The cubic root of 2505682394 is about 1358.2363228831.

The spelling of 2505682394 in words is "two billion, five hundred five million, six hundred eighty-two thousand, three hundred ninety-four".