25432282699849 has 9 divisors (see below), whose sum is σ = 25634759264487. Its totient is φ = 25231393081944.

The previous prime is 25432282699847. The next prime is 25432282699913. The reversal of 25432282699849 is 94899628223452.

The square root of 25432282699849 is 5043043.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 23178861400249 + 2253421299600 = 4814443^2 + 1501140^2 .

It is not a de Polignac number, because 25432282699849 - 2¹ = 25432282699847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25432282699847) 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 8 ways as a sum of consecutive naturals, for example, 640446607 + ... + 640486315.

It is an arithmetic number, because the mean of its divisors is an integer number (2848306584943).

Almost surely, 2^{25432282699849} is an apocalyptic number.

25432282699849 is the 5043043-rd square number.

25432282699849 is the 2521522-nd centered octagonal number.

It is an amenable number.

25432282699849 is a deficient number, since it is larger than the sum of its proper divisors (202476564638).

25432282699849 is an frugal number, since it uses more digits than its factorization.

25432282699849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79672 (or 39836 counting only the distinct ones).

The product of its digits is 1074954240, while the sum is 73.

The spelling of 25432282699849 in words is "twenty-five trillion, four hundred thirty-two billion, two hundred eighty-two million, six hundred ninety-nine thousand, eight hundred forty-nine".