25564541342 has 4 divisors (see below), whose sum is σ = 38346812016. Its totient is φ = 12782270670.

The previous prime is 25564541339. The next prime is 25564541369. The reversal of 25564541342 is 24314546552.

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

It is a self number, because there is not a number n which added to its sum of digits gives 25564541342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6391135334 + ... + 6391135337.

It is an arithmetic number, because the mean of its divisors is an integer number (9586703004).

Almost surely, 2^25564541342 is an apocalyptic number.

25564541342 is a deficient number, since it is larger than the sum of its proper divisors (12782270674).

25564541342 is a wasteful number, since it uses less digits than its factorization.

25564541342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12782270673.

The product of its digits is 576000, while the sum is 41.

The spelling of 25564541342 in words is "twenty-five billion, five hundred sixty-four million, five hundred forty-one thousand, three hundred forty-two".