25288030656 has 224 divisors, whose sum is σ = 87260257280. Its totient is φ = 7029752832.

The previous prime is 25288030633. The next prime is 25288030657. The reversal of 25288030656 is 65603088252.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25288030657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 419301 + ... + 475803.

It is an arithmetic number, because the mean of its divisors is an integer number (389554720).

Almost surely, 2^25288030656 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 25288030656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43630128640).

25288030656 is an abundant number, since it is smaller than the sum of its proper divisors (61972226624).

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

25288030656 is a wasteful number, since it uses less digits than its factorization.

25288030656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56568 (or 56552 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 25288030656 in words is "twenty-five billion, two hundred eighty-eight million, thirty thousand, six hundred fifty-six".