25542650529293 has 4 divisors (see below), whose sum is σ = 25795548059388. Its totient is φ = 25289752999200.

The previous prime is 25542650529259. The next prime is 25542650529301. The reversal of 25542650529293 is 39292505624552.

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 17523910428649 + 8018740100644 = 4186157^2 + 2831738^2 .

It is a cyclic number.

It is not a de Polignac number, because 25542650529293 - 2²⁶ = 25542583420429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25542650529593) 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, 126448764896 + ... + 126448765097.

It is an arithmetic number, because the mean of its divisors is an integer number (6448887014847).

Almost surely, 2^{25542650529293} is an apocalyptic number.

It is an amenable number.

25542650529293 is a deficient number, since it is larger than the sum of its proper divisors (252897530095).

25542650529293 is a wasteful number, since it uses less digits than its factorization.

25542650529293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252897530094.

The product of its (nonzero) digits is 58320000, while the sum is 59.

The spelling of 25542650529293 in words is "twenty-five trillion, five hundred forty-two billion, six hundred fifty million, five hundred twenty-nine thousand, two hundred ninety-three".