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123025 = 5271937
BaseRepresentation
bin11110000010010001
320020202111
4132002101
512414100
62345321
71021450
oct360221
9206674
10123025
1184481
125b241
1343cc6
1432b97
15266ba
hex1e091

123025 has 24 divisors (see below), whose sum is σ = 188480. Its totient is φ = 77760.

The previous prime is 123017. The next prime is 123031. The reversal of 123025 is 520321.

It is not a de Polignac number, because 123025 - 23 = 123017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122996 and 123014.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3307 + ... + 3343.

2123025 is an apocalyptic number.

It is an amenable number.

123025 is a deficient number, since it is larger than the sum of its proper divisors (65455).

123025 is a wasteful number, since it uses less digits than its factorization.

123025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 123025 is about 350.7491981459. The cubic root of 123025 is about 49.7352674742.

Adding to 123025 its reverse (520321), we get a palindrome (643346).

The spelling of 123025 in words is "one hundred twenty-three thousand, twenty-five".

Divisors: 1 5 7 19 25 35 37 95 133 175 185 259 475 665 703 925 1295 3325 3515 4921 6475 17575 24605 123025