Search a number
-
+
12250252420 = 2257443197521
BaseRepresentation
bin10110110100010110…
…00000010010000100
31011121202000022010121
423122023000102010
5200042031034140
65343325231324
7612400266430
oct133213002204
934552008117
1012250252420
115216a47a5a
12245a702544
131202c65093
14842d619c0
154ba70464a
hex2da2c0484

12250252420 has 48 divisors (see below), whose sum is σ = 29467122048. Its totient is φ = 4190584320.

The previous prime is 12250252409. The next prime is 12250252429. The reversal of 12250252420 is 2425205221.

It is not an unprimeable number, because it can be changed into a prime (12250252429) 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, 36741 + ... + 160780.

It is an arithmetic number, because the mean of its divisors is an integer number (613898376).

Almost surely, 212250252420 is an apocalyptic number.

12250252420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12250252420 is an abundant number, since it is smaller than the sum of its proper divisors (17216869628).

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

12250252420 is a wasteful number, since it uses less digits than its factorization.

12250252420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197980 (or 197978 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 12250252420 its reverse (2425205221), we get a palindrome (14675457641).

The spelling of 12250252420 in words is "twelve billion, two hundred fifty million, two hundred fifty-two thousand, four hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 443 886 1772 2215 3101 4430 6202 8860 12404 15505 31010 62020 197521 395042 790084 987605 1382647 1975210 2765294 3950420 5530588 6913235 13826470 27652940 87501803 175003606 350007212 437509015 612512621 875018030 1225025242 1750036060 2450050484 3062563105 6125126210 12250252420