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25123079 is a prime number
BaseRepresentation
bin101111111010…
…1100100000111
31202021101101102
41133311210013
522412414304
62254250315
7423354062
oct137654407
952241342
1025123079
11131aa383
1284b699b
135288237
14349d8d9
152313d1e
hex17f5907

25123079 has 2 divisors, whose sum is σ = 25123080. Its totient is φ = 25123078.

The previous prime is 25123001. The next prime is 25123081. The reversal of 25123079 is 97032152.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-25123079 is a prime.

It is a super-3 number, since 3×251230793 (a number of 23 digits) contains 333 as substring.

It is a Sophie Germain prime.

Together with 25123081, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25123099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12561539 + 12561540.

It is an arithmetic number, because the mean of its divisors is an integer number (12561540).

Almost surely, 225123079 is an apocalyptic number.

25123079 is a deficient number, since it is larger than the sum of its proper divisors (1).

25123079 is an equidigital number, since it uses as much as digits as its factorization.

25123079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 25123079 is about 5012.2927887345. The cubic root of 25123079 is about 292.8808354192.

The spelling of 25123079 in words is "twenty-five million, one hundred twenty-three thousand, seventy-nine".