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7513125 = 3544007
BaseRepresentation
bin11100101010010000100101
3112010201001220
4130222100211
53410410000
6425010553
7120601104
oct34522045
915121056
107513125
1142717a4
122623a59
131730949
14dd803b
159d61a0
hex72a425

7513125 has 20 divisors (see below), whose sum is σ = 12520992. Its totient is φ = 4006000.

The previous prime is 7513123. The next prime is 7513139. The reversal of 7513125 is 5213157.

It is not a de Polignac number, because 7513125 - 21 = 7513123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7513095 and 7513104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7513123) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 129 + ... + 3878.

Almost surely, 27513125 is an apocalyptic number.

7513125 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7513125 is a deficient number, since it is larger than the sum of its proper divisors (5007867).

7513125 is an equidigital number, since it uses as much as digits as its factorization.

7513125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030 (or 4015 counting only the distinct ones).

The product of its digits is 1050, while the sum is 24.

The square root of 7513125 is about 2741.0080262560. The cubic root of 7513125 is about 195.8574991555.

Subtracting from 7513125 its reverse (5213157), we obtain a cube (2299968 = 1323).

The spelling of 7513125 in words is "seven million, five hundred thirteen thousand, one hundred twenty-five".

Divisors: 1 3 5 15 25 75 125 375 625 1875 4007 12021 20035 60105 100175 300525 500875 1502625 2504375 7513125