16625265720 has 256 divisors, whose sum is σ = 59694243840. Its totient is φ = 3621708288.

The previous prime is 16625265637. The next prime is 16625265737. The reversal of 16625265720 is 2756252661.

It is a Cunningham number, because it is equal to 128939²-1.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5929839 + ... + 5932641.

It is an arithmetic number, because the mean of its divisors is an integer number (233180640).

Almost surely, 2^16625265720 is an apocalyptic number.

16625265720 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 16625265720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29847121920).

16625265720 is an abundant number, since it is smaller than the sum of its proper divisors (43068978120).

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

16625265720 is a wasteful number, since it uses less digits than its factorization.

16625265720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3154 (or 3150 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 16625265720 in words is "sixteen billion, six hundred twenty-five million, two hundred sixty-five thousand, seven hundred twenty".