25620255254749 has 4 divisors (see below), whose sum is σ = 25620270399900. Its totient is φ = 25620240109600.

The previous prime is 25620255254717. The next prime is 25620255254771. The reversal of 25620255254749 is 94745255202652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16079755141849 + 9540500112900 = 4009957^2 + 3088770^2 .

It is a cyclic number.

It is not a de Polignac number, because 25620255254749 - 2⁵ = 25620255254717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25620255254693 and 25620255254702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25620255257749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4662274 + ... + 8542675.

It is an arithmetic number, because the mean of its divisors is an integer number (6405067599975).

Almost surely, 2^{25620255254749} is an apocalyptic number.

It is an amenable number.

25620255254749 is a deficient number, since it is larger than the sum of its proper divisors (15145151).

25620255254749 is a wasteful number, since it uses less digits than its factorization.

25620255254749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15145150.

The product of its (nonzero) digits is 60480000, while the sum is 58.

The spelling of 25620255254749 in words is "twenty-five trillion, six hundred twenty billion, two hundred fifty-five million, two hundred fifty-four thousand, seven hundred forty-nine".