Search a number
-
+
25030808 = 23112383149
BaseRepresentation
bin101111101111…
…1000010011000
31202002200210222
41133133002120
522401441213
62252255212
7422521055
oct137370230
952080728
1025030808
1113147020
128471508
13525523a
14347802c
1522e6808
hex17df098

25030808 has 64 divisors (see below), whose sum is σ = 54432000. Its totient is φ = 10679680.

The previous prime is 25030807. The next prime is 25030843. The reversal of 25030808 is 80803052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25030807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167918 + ... + 168066.

It is an arithmetic number, because the mean of its divisors is an integer number (850500).

Almost surely, 225030808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25030808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27216000).

25030808 is an abundant number, since it is smaller than the sum of its proper divisors (29401192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25030808 is a wasteful number, since it uses less digits than its factorization.

25030808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 25030808 is about 5003.0798514515. The cubic root of 25030808 is about 292.5218353680.

The spelling of 25030808 in words is "twenty-five million, thirty thousand, eight hundred eight".

Divisors: 1 2 4 8 11 22 23 44 46 83 88 92 149 166 184 253 298 332 506 596 664 913 1012 1192 1639 1826 1909 2024 3278 3427 3652 3818 6556 6854 7304 7636 12367 13112 13708 15272 20999 24734 27416 37697 41998 49468 75394 83996 98936 136037 150788 167992 272074 284441 301576 544148 568882 1088296 1137764 2275528 3128851 6257702 12515404 25030808