25630067709 has 20 divisors (see below), whose sum is σ = 38352187104. Its totient is φ = 17057571624.

The previous prime is 25630067669. The next prime is 25630067711. The reversal of 25630067709 is 90776003652.

25630067709 is a `hidden beast` number, since 2 + 5 + 630 + 0 + 6 + 7 + 7 + 0 + 9 = 666.

It is not a de Polignac number, because 25630067709 - 2¹⁹ = 25629543421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25630067719) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 221977 + ... + 317070.

Almost surely, 2^25630067709 is an apocalyptic number.

It is an amenable number.

25630067709 is a deficient number, since it is larger than the sum of its proper divisors (12722119395).

25630067709 is an equidigital number, since it uses as much as digits as its factorization.

25630067709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539646 (or 539637 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 45.

The spelling of 25630067709 in words is "twenty-five billion, six hundred thirty million, sixty-seven thousand, seven hundred nine".