25066361442 has 16 divisors (see below), whose sum is σ = 50138704512. Its totient is φ = 8354456880.

The previous prime is 25066361389. The next prime is 25066361447. The reversal of 25066361442 is 24416366052.

It is a self number, because there is not a number n which added to its sum of digits gives 25066361442.

It is not an unprimeable number, because it can be changed into a prime (25066361447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193809 + ... + 296132.

It is an arithmetic number, because the mean of its divisors is an integer number (3133669032).

Almost surely, 2^25066361442 is an apocalyptic number.

25066361442 is an abundant number, since it is smaller than the sum of its proper divisors (25072343070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25066361442 is a wasteful number, since it uses less digits than its factorization.

25066361442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498473.

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 25066361442 in words is "twenty-five billion, sixty-six million, three hundred sixty-one thousand, four hundred forty-two".