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23781288125 = 5475435723
BaseRepresentation
bin10110001001011110…
…011010100010111101
32021101100200121102002
4112021132122202331
5342201002210000
614531443312045
71501215420350
oct261136324275
967340617362
1023781288125
11a0a3a0a831
12473837b625
13231cbc002a
141218586297
15942bdc8d5
hex58979a8bd

23781288125 has 20 divisors (see below), whose sum is σ = 33962403552. Its totient is φ = 16307166000.

The previous prime is 23781288119. The next prime is 23781288211. The reversal of 23781288125 is 52188218732.

It is not a de Polignac number, because 23781288125 - 224 = 23764510909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23781288125.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2713487 + ... + 2722236.

Almost surely, 223781288125 is an apocalyptic number.

23781288125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23781288125 is a deficient number, since it is larger than the sum of its proper divisors (10181115427).

23781288125 is an frugal number, since it uses more digits than its factorization.

23781288125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5435750 (or 5435735 counting only the distinct ones).

The product of its digits is 430080, while the sum is 47.

The spelling of 23781288125 in words is "twenty-three billion, seven hundred eighty-one million, two hundred eighty-eight thousand, one hundred twenty-five".

Divisors: 1 5 7 25 35 125 175 625 875 4375 5435723 27178615 38050061 135893075 190250305 679465375 951251525 3397326875 4756257625 23781288125