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75025 = 523001
BaseRepresentation
bin10010010100010001
310210220201
4102110101
54400100
61335201
7431506
oct222421
9123821
1075025
1151405
1237501
13281c2
141d4ad
151736a
hex12511

75025 has 6 divisors (see below), whose sum is σ = 93062. Its totient is φ = 60000.

The previous prime is 75017. The next prime is 75029. The reversal of 75025 is 52057.

It is a happy number.

It is the 24-th Fibonacci number F24.

It can be written as a sum of positive squares in 3 ways, for example, as 5329 + 69696 = 73^2 + 264^2 .

It is not a de Polignac number, because 75025 - 23 = 75017 is a prime.

It is a Duffinian number.

75025 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 74993 and 75011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1476 + ... + 1525.

275025 is an apocalyptic number.

It is an amenable number.

75025 is a deficient number, since it is larger than the sum of its proper divisors (18037).

75025 is a wasteful number, since it uses less digits than its factorization.

75025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3011 (or 3006 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 19.

The square root of 75025 is about 273.9069184960. The cubic root of 75025 is about 42.1763184816.

The spelling of 75025 in words is "seventy-five thousand, twenty-five".

Divisors: 1 5 25 3001 15005 75025