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7985025 = 3252231543
BaseRepresentation
bin11110011101011110000001
3120000200101200
4132131132001
54021010100
6443051413
7124604646
oct36353601
916020350
107985025
1145642a4
122810b69
131867689
1410bbdcd
15a7ae00
hex79d781

7985025 has 36 divisors (see below), whose sum is σ = 14933568. Its totient is φ = 4070880.

The previous prime is 7985023. The next prime is 7985039. The reversal of 7985025 is 5205897.

It is not a de Polignac number, because 7985025 - 21 = 7985023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7985023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4404 + ... + 5946.

Almost surely, 27985025 is an apocalyptic number.

7985025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7985025 is a deficient number, since it is larger than the sum of its proper divisors (6948543).

7985025 is a wasteful number, since it uses less digits than its factorization.

7985025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582 (or 1574 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 7985025 is about 2825.7786537519. The cubic root of 7985025 is about 199.8751303875.

The spelling of 7985025 in words is "seven million, nine hundred eighty-five thousand, twenty-five".

Divisors: 1 3 5 9 15 23 25 45 69 75 115 207 225 345 575 1035 1543 1725 4629 5175 7715 13887 23145 35489 38575 69435 106467 115725 177445 319401 347175 532335 887225 1597005 2661675 7985025