25501523488 has 96 divisors (see below), whose sum is σ = 58092104448. Its totient is φ = 10793779200.

The previous prime is 25501523471. The next prime is 25501523501. The reversal of 25501523488 is 88432510552.

It is a super-2 number, since 2×25501523488² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13926733 + ... + 13928563.

It is an arithmetic number, because the mean of its divisors is an integer number (605126088).

Almost surely, 2^25501523488 is an apocalyptic number.

25501523488 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25501523488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29046052224).

25501523488 is an abundant number, since it is smaller than the sum of its proper divisors (32590580960).

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

25501523488 is a wasteful number, since it uses less digits than its factorization.

25501523488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2586 (or 2578 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 43.

The spelling of 25501523488 in words is "twenty-five billion, five hundred one million, five hundred twenty-three thousand, four hundred eighty-eight".