25081049028 has 48 divisors (see below), whose sum is σ = 70402949120. Its totient is φ = 6788854944.

The previous prime is 25081048973. The next prime is 25081049029. The reversal of 25081049028 is 82094018052.

It is not an unprimeable number, because it can be changed into a prime (25081049029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7855876 + ... + 7859067.

Almost surely, 2^25081049028 is an apocalyptic number.

25081049028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25081049028 is an abundant number, since it is smaller than the sum of its proper divisors (45321900092).

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

25081049028 is a wasteful number, since it uses less digits than its factorization.

25081049028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15714976 (or 15714974 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 25081049028 in words is "twenty-five billion, eighty-one million, forty-nine thousand, twenty-eight".