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25919 is a prime number
BaseRepresentation
bin110010100111111
31022112222
412110333
51312134
6315555
7135365
oct62477
938488
1025919
1118523
1212bbb
13ba4a
149635
157a2e
hex653f

25919 has 2 divisors, whose sum is σ = 25920. Its totient is φ = 25918.

The previous prime is 25913. The next prime is 25931. The reversal of 25919 is 91952.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25919 - 24 = 25903 is a prime.

It is a super-2 number, since 2×259192 = 1343589122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a plaindrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 25919.

It is not a weakly prime, because it can be changed into another prime (25913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12959 + 12960.

It is an arithmetic number, because the mean of its divisors is an integer number (12960).

225919 is an apocalyptic number.

25919 is a deficient number, since it is larger than the sum of its proper divisors (1).

25919 is an equidigital number, since it uses as much as digits as its factorization.

25919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810, while the sum is 26.

The square root of 25919 is about 160.9937887001. The cubic root of 25919 is about 29.5941642988.

The spelling of 25919 in words is "twenty-five thousand, nine hundred nineteen".