525501302128 has 120 divisors (see below), whose sum is σ = 1127601578880. Its totient is φ = 237061545600.

The previous prime is 525501302069. The next prime is 525501302141. The reversal of 525501302128 is 821203105525.

It is a junction number, because it is equal to n+sod(n) for n = 525501302093 and 525501302102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 407049163 + ... + 407050453.

It is an arithmetic number, because the mean of its divisors is an integer number (9396679824).

Almost surely, 2^525501302128 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 525501302128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (563800789440).

525501302128 is an abundant number, since it is smaller than the sum of its proper divisors (602100276752).

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

525501302128 is a wasteful number, since it uses less digits than its factorization.

525501302128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2747 (or 2730 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 34.

The spelling of 525501302128 in words is "five hundred twenty-five billion, five hundred one million, three hundred two thousand, one hundred twenty-eight".