Search a number
-
+
25000303420 = 2252395230189
BaseRepresentation
bin10111010010001000…
…100101101100111100
32101112022111000000201
4113102020211230330
5402200034202140
615252431133244
71543350033661
oct272210455474
971468430021
1025000303420
11a66a023a94
124a18674224
132485611661
1412d2425a68
159b4c3249a
hex5d2225b3c

25000303420 has 24 divisors (see below), whose sum is σ = 52720315200. Its totient is φ = 9958277952.

The previous prime is 25000303409. The next prime is 25000303453. The reversal of 25000303420 is 2430300052.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2610315 + ... + 2619874.

It is an arithmetic number, because the mean of its divisors is an integer number (2196679800).

Almost surely, 225000303420 is an apocalyptic number.

25000303420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25000303420 is an abundant number, since it is smaller than the sum of its proper divisors (27720011780).

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

25000303420 is a wasteful number, since it uses less digits than its factorization.

25000303420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5230437 (or 5230435 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

Adding to 25000303420 its reverse (2430300052), we get a palindrome (27430603472).

The spelling of 25000303420 in words is "twenty-five billion, three hundred three thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 239 478 956 1195 2390 4780 5230189 10460378 20920756 26150945 52301890 104603780 1250015171 2500030342 5000060684 6250075855 12500151710 25000303420