Search a number
-
+
25081361 is a prime number
BaseRepresentation
bin101111110101…
…1011000010001
31202012021011022
41133223120101
522410100421
62253325225
7423121334
oct137533021
952167138
1025081361
1113180aa8
128496815
135272256
14348c61b
1523067ab
hex17eb611

25081361 has 2 divisors, whose sum is σ = 25081362. Its totient is φ = 25081360.

The previous prime is 25081337. The next prime is 25081373. The reversal of 25081361 is 16318052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23580736 + 1500625 = 4856^2 + 1225^2 .

It is a cyclic number.

It is not a de Polignac number, because 25081361 - 26 = 25081297 is a prime.

It is a super-2 number, since 2×250813612 = 1258149339224642, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25081361.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12540680 + 12540681.

It is an arithmetic number, because the mean of its divisors is an integer number (12540681).

Almost surely, 225081361 is an apocalyptic number.

It is an amenable number.

25081361 is a deficient number, since it is larger than the sum of its proper divisors (1).

25081361 is an equidigital number, since it uses as much as digits as its factorization.

25081361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 25081361 is about 5008.1294911374. The cubic root of 25081361 is about 292.7186316808.

The spelling of 25081361 in words is "twenty-five million, eighty-one thousand, three hundred sixty-one".