25456665452 has 6 divisors (see below), whose sum is σ = 44549164548. Its totient is φ = 12728332724.

The previous prime is 25456665449. The next prime is 25456665457.

25456665452 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 25456665452.

It is not an unprimeable number, because it can be changed into a prime (25456665457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3182083178 + ... + 3182083185.

It is an arithmetic number, because the mean of its divisors is an integer number (7424860758).

Almost surely, 2^25456665452 is an apocalyptic number.

It is an amenable number.

25456665452 is a deficient number, since it is larger than the sum of its proper divisors (19092499096).

25456665452 is a wasteful number, since it uses less digits than its factorization.

25456665452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6364166367 (or 6364166365 counting only the distinct ones).

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

The spelling of 25456665452 in words is "twenty-five billion, four hundred fifty-six million, six hundred sixty-five thousand, four hundred fifty-two".