25489475272448 has 144 divisors (see below), whose sum is σ = 56434166232192. Its totient is φ = 11392255488000.

The previous prime is 25489475272447. The next prime is 25489475272483. The reversal of 25489475272448 is 84427257498452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25489475272447) 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, 529561343 + ... + 529609473.

It is an arithmetic number, because the mean of its divisors is an integer number (391903932168).

Almost surely, 2^{25489475272448} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25489475272448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28217083116096).

25489475272448 is an abundant number, since it is smaller than the sum of its proper divisors (30944690959744).

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

25489475272448 is a wasteful number, since it uses less digits than its factorization.

25489475272448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51302 (or 51288 counting only the distinct ones).

The product of its digits is 1445068800, while the sum is 71.

The spelling of 25489475272448 in words is "twenty-five trillion, four hundred eighty-nine billion, four hundred seventy-five million, two hundred seventy-two thousand, four hundred forty-eight".