25623530652 has 48 divisors (see below), whose sum is σ = 60714843392. Its totient is φ = 8408949120.

The previous prime is 25623530629. The next prime is 25623530657. The reversal of 25623530652 is 25603532652.

It is a self number, because there is not a number n which added to its sum of digits gives 25623530652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25623530657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1594377 + ... + 1610367.

Almost surely, 2^25623530652 is an apocalyptic number.

It is an amenable number.

25623530652 is an abundant number, since it is smaller than the sum of its proper divisors (35091312740).

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

25623530652 is a wasteful number, since it uses less digits than its factorization.

25623530652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18058 (or 18056 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 39.

The spelling of 25623530652 in words is "twenty-five billion, six hundred twenty-three million, five hundred thirty thousand, six hundred fifty-two".