2625012639 has 24 divisors (see below), whose sum is σ = 3853204992. Its totient is φ = 1721719440.

The previous prime is 2625012581. The next prime is 2625012661. The reversal of 2625012639 is 9362105262.

2625012639 is a `hidden beast` number, since 2 + 6 + 2 + 5 + 0 + 12 + 639 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-2625012639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2625012679) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 317334 + ... + 325500.

It is an arithmetic number, because the mean of its divisors is an integer number (160550208).

Almost surely, 2^2625012639 is an apocalyptic number.

2625012639 is a deficient number, since it is larger than the sum of its proper divisors (1228192353).

2625012639 is a wasteful number, since it uses less digits than its factorization.

2625012639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8747 (or 8744 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 2625012639 is about 51234.8771736597. The cubic root of 2625012639 is about 1379.4643021580.

The spelling of 2625012639 in words is "two billion, six hundred twenty-five million, twelve thousand, six hundred thirty-nine".