25766453652 has 12 divisors (see below), whose sum is σ = 60121725216. Its totient is φ = 8588817880.

The previous prime is 25766453621. The next prime is 25766453663. The reversal of 25766453652 is 25635466752.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 25766453595 and 25766453604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073602224 + ... + 1073602247.

It is an arithmetic number, because the mean of its divisors is an integer number (5010143768).

Almost surely, 2^25766453652 is an apocalyptic number.

It is an amenable number.

25766453652 is an abundant number, since it is smaller than the sum of its proper divisors (34355271564).

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

25766453652 is a wasteful number, since it uses less digits than its factorization.

25766453652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147204478 (or 2147204476 counting only the distinct ones).

The product of its digits is 9072000, while the sum is 51.

The spelling of 25766453652 in words is "twenty-five billion, seven hundred sixty-six million, four hundred fifty-three thousand, six hundred fifty-two".