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75712025 = 5219715373
BaseRepresentation
bin1001000001101…
…00011000011001
312021110120101002
410200310120121
5123340241100
611302434345
71606353524
oct440643031
9167416332
1075712025
1139812624
12214329b5
13128bb71c
14a0abbbb
1569a82d5
hex4834619

75712025 has 12 divisors (see below), whose sum is σ = 94365612. Its totient is φ = 60258240.

The previous prime is 75712009. The next prime is 75712061. The reversal of 75712025 is 52021757.

It can be written as a sum of positive squares in 6 ways, for example, as 1700416 + 74011609 = 1304^2 + 8603^2 .

It is not a de Polignac number, because 75712025 - 24 = 75712009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2762 + ... + 12611.

It is an arithmetic number, because the mean of its divisors is an integer number (7863801).

Almost surely, 275712025 is an apocalyptic number.

It is an amenable number.

75712025 is a deficient number, since it is larger than the sum of its proper divisors (18653587).

75712025 is a wasteful number, since it uses less digits than its factorization.

75712025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15580 (or 15575 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 75712025 is about 8701.2657125271. The cubic root of 75712025 is about 423.0466763077.

The spelling of 75712025 in words is "seventy-five million, seven hundred twelve thousand, twenty-five".

Divisors: 1 5 25 197 985 4925 15373 76865 384325 3028481 15142405 75712025