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30500053025 = 5213896171709
BaseRepresentation
bin11100011001111100…
…011110000000100001
32220201121020020011112
4130121330132000201
5444431003144100
622002253553105
72126551113251
oct343174360041
986647206145
1030500053025
1111a315372a2
125ab24a5795
132b50b68370
141694a15961
15bd79a2b35
hex719f1e021

30500053025 has 48 divisors (see below), whose sum is σ = 41277826800. Its totient is φ = 22220943360.

The previous prime is 30500053013. The next prime is 30500053027. The reversal of 30500053025 is 52035000503.

It is a happy number.

It can be written as a sum of positive squares in 24 ways, for example, as 29373846544 + 1126206481 = 171388^2 + 33559^2 .

It is not a de Polignac number, because 30500053025 - 28 = 30500052769 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30500053027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17845871 + ... + 17847579.

It is an arithmetic number, because the mean of its divisors is an integer number (859954725).

Almost surely, 230500053025 is an apocalyptic number.

It is an amenable number.

30500053025 is a deficient number, since it is larger than the sum of its proper divisors (10777773775).

30500053025 is a wasteful number, since it uses less digits than its factorization.

30500053025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2438 (or 2433 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 23.

Adding to 30500053025 its reverse (52035000503), we get a palindrome (82535053528).

The spelling of 30500053025 in words is "thirty billion, five hundred million, fifty-three thousand, twenty-five".

Divisors: 1 5 13 25 65 89 325 445 617 1157 1709 2225 3085 5785 8021 8545 15425 22217 28925 40105 42725 54913 111085 152101 200525 274565 555425 713869 760505 1054453 1372825 1977313 3569345 3802525 5272265 9886565 13707889 17846725 26361325 49432825 68539445 93846317 342697225 469231585 1220002121 2346157925 6100010605 30500053025