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30231451225 = 521209258049
BaseRepresentation
bin11100001001111011…
…110101011001011001
32220000212210211202201
4130021323311121121
5443403222414400
621515500530201
72120110044523
oct341173653131
986025724681
1030231451225
1111903958838
125a38550961
132b0a311aa1
14166b096a13
15bbe0e706a
hex709ef5659

30231451225 has 6 divisors (see below), whose sum is σ = 37486999550. Its totient is φ = 24185160960.

The previous prime is 30231451207. The next prime is 30231451253. The reversal of 30231451225 is 52215413203.

It can be written as a sum of positive squares in 3 ways, for example, as 1476788041 + 28754663184 = 38429^2 + 169572^2 .

It is not a de Polignac number, because 30231451225 - 27 = 30231451097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30231451193 and 30231451202.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 604629000 + ... + 604629049.

Almost surely, 230231451225 is an apocalyptic number.

It is an amenable number.

30231451225 is a deficient number, since it is larger than the sum of its proper divisors (7255548325).

30231451225 is a wasteful number, since it uses less digits than its factorization.

30231451225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209258059 (or 1209258054 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 30231451225 its reverse (52215413203), we get a palindrome (82446864428).

The spelling of 30231451225 in words is "thirty billion, two hundred thirty-one million, four hundred fifty-one thousand, two hundred twenty-five".

Divisors: 1 5 25 1209258049 6046290245 30231451225