16425530520 has 128 divisors (see below), whose sum is σ = 56363696640. Its totient is φ = 3751234560.

The previous prime is 16425530507. The next prime is 16425530567. The reversal of 16425530520 is 2503552461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1070100 + ... + 1085340.

It is an arithmetic number, because the mean of its divisors is an integer number (440341380).

Almost surely, 2^16425530520 is an apocalyptic number.

16425530520 is a gapful number since it is divisible by the number (10) 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 16425530520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28181848320).

16425530520 is an abundant number, since it is smaller than the sum of its proper divisors (39938166120).

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

16425530520 is a wasteful number, since it uses less digits than its factorization.

16425530520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16545 (or 16541 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 16425530520 in words is "sixteen billion, four hundred twenty-five million, five hundred thirty thousand, five hundred twenty".