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2043215225 = 5281728609
BaseRepresentation
bin111100111001000…
…1111110101111001
312021101200002100222
41321302033311321
513141030341400
6534425105425
7101430020462
oct17162176571
95241602328
102043215225
11959383927
12490328275
132673c84bc
14155507d69
15be59c185
hex79c8fd79

2043215225 has 6 divisors (see below), whose sum is σ = 2533586910. Its totient is φ = 1634572160.

The previous prime is 2043215171. The next prime is 2043215231. The reversal of 2043215225 is 5225123402.

It can be written as a sum of positive squares in 3 ways, for example, as 58690921 + 1984524304 = 7661^2 + 44548^2 .

It is not a de Polignac number, because 2043215225 - 224 = 2026438009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2043215194 and 2043215203.

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, 40864280 + ... + 40864329.

It is an arithmetic number, because the mean of its divisors is an integer number (422264485).

Almost surely, 22043215225 is an apocalyptic number.

2043215225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2043215225 is a deficient number, since it is larger than the sum of its proper divisors (490371685).

2043215225 is an equidigital number, since it uses as much as digits as its factorization.

2043215225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81728619 (or 81728614 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2043215225 is about 45201.9382880867. The cubic root of 2043215225 is about 1268.9310916255.

Adding to 2043215225 its reverse (5225123402), we get a palindrome (7268338627).

The spelling of 2043215225 in words is "two billion, forty-three million, two hundred fifteen thousand, two hundred twenty-five".

Divisors: 1 5 25 81728609 408643045 2043215225