25645654652 has 24 divisors (see below), whose sum is σ = 46144254912. Its totient is φ = 12463891200.

The previous prime is 25645654609. The next prime is 25645654733.

25645654652 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×25645654652² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25645654652.

It is a congruent number.

It is an unprimeable number.

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, 244073 + ... + 332960.

It is an arithmetic number, because the mean of its divisors is an integer number (1922677288).

Almost surely, 2^25645654652 is an apocalyptic number.

It is an amenable number.

25645654652 is a deficient number, since it is larger than the sum of its proper divisors (20498600260).

25645654652 is a wasteful number, since it uses less digits than its factorization.

25645654652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577349 (or 577347 counting only the distinct ones).

The product of its digits is 8640000, while the sum is 50.

The spelling of 25645654652 in words is "twenty-five billion, six hundred forty-five million, six hundred fifty-four thousand, six hundred fifty-two".