25089444642 has 16 divisors (see below), whose sum is σ = 50321043360. Its totient is φ = 8339455872.

The previous prime is 25089444629. The next prime is 25089444649. The reversal of 25089444642 is 24644498052.

It is a junction number, because it is equal to n+sod(n) for n = 25089444591 and 25089444600.

It is not an unprimeable number, because it can be changed into a prime (25089444649) 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, 5920792 + ... + 5925027.

It is an arithmetic number, because the mean of its divisors is an integer number (3145065210).

Almost surely, 2^25089444642 is an apocalyptic number.

25089444642 is an abundant number, since it is smaller than the sum of its proper divisors (25231598718).

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

25089444642 is a wasteful number, since it uses less digits than its factorization.

25089444642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11846177.

The product of its (nonzero) digits is 2211840, while the sum is 48.

The spelling of 25089444642 in words is "twenty-five billion, eighty-nine million, four hundred forty-four thousand, six hundred forty-two".