25616861652 has 24 divisors (see below), whose sum is σ = 60073048000. Its totient is φ = 8496043776.

The previous prime is 25616861617. The next prime is 25616861657.

25616861652 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25616861657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5361277 + ... + 5366052.

Almost surely, 2^25616861652 is an apocalyptic number.

It is an amenable number.

25616861652 is an abundant number, since it is smaller than the sum of its proper divisors (34456186348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25616861652 is a wasteful number, since it uses less digits than its factorization.

25616861652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10727535 (or 10727533 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 48.

The spelling of 25616861652 in words is "twenty-five billion, six hundred sixteen million, eight hundred sixty-one thousand, six hundred fifty-two".