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47125025 = 529719433
BaseRepresentation
bin1011001111000…
…1001000100001
310021200012101022
42303301020201
544031000100
64402015225
71111361513
oct263611041
9107605338
1047125025
1124667802
1213947515
1399bc93c
146389bb3
15420ce85
hex2cf1221

47125025 has 12 divisors (see below), whose sum is σ = 59040492. Its totient is φ = 37309440.

The previous prime is 47125021. The next prime is 47125049. The reversal of 47125025 is 52052174.

It can be written as a sum of positive squares in 6 ways, for example, as 7573504 + 39551521 = 2752^2 + 6289^2 .

It is not a de Polignac number, because 47125025 - 22 = 47125021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47124985 and 47125003.

It is not an unprimeable number, because it can be changed into a prime (47125021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7292 + ... + 12141.

It is an arithmetic number, because the mean of its divisors is an integer number (4920041).

Almost surely, 247125025 is an apocalyptic number.

It is an amenable number.

47125025 is a deficient number, since it is larger than the sum of its proper divisors (11915467).

47125025 is a wasteful number, since it uses less digits than its factorization.

47125025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19540 (or 19535 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 47125025 is about 6864.7669297654. The cubic root of 47125025 is about 361.2023200682.

Adding to 47125025 its reverse (52052174), we get a palindrome (99177199).

The spelling of 47125025 in words is "forty-seven million, one hundred twenty-five thousand, twenty-five".

Divisors: 1 5 25 97 485 2425 19433 97165 485825 1885001 9425005 47125025