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15420153452225 = 5210691499384919
BaseRepresentation
bin1110000001100100100011…
…0001001101011011000001
32000121011010000012012100212
43200121020301031123001
54010120433240432400
652443530512123505
73151032530463104
oct340311061153301
960534100165325
1015420153452225
114a05717691915
121890642236595
1387b163c72a82
143b44a74a673b
151bb1a84db335
hexe0648c4d6c1

15420153452225 has 24 divisors (see below), whose sum is σ = 19151694600000. Its totient is φ = 12316329023040.

The previous prime is 15420153452183. The next prime is 15420153452237. The reversal of 15420153452225 is 52225435102451.

It is not a de Polignac number, because 15420153452225 - 26 = 15420153452161 is a prime.

It is a super-2 number, since 2×154201534522252 (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39868316 + ... + 40253234.

It is an arithmetic number, because the mean of its divisors is an integer number (797987275000).

Almost surely, 215420153452225 is an apocalyptic number.

It is an amenable number.

15420153452225 is a deficient number, since it is larger than the sum of its proper divisors (3731541147775).

15420153452225 is a wasteful number, since it uses less digits than its factorization.

15420153452225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387497 (or 387492 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 41.

Adding to 15420153452225 its reverse (52225435102451), we get a palindrome (67645588554676).

The spelling of 15420153452225 in words is "fifteen trillion, four hundred twenty billion, one hundred fifty-three million, four hundred fifty-two thousand, two hundred twenty-five".

Divisors: 1 5 25 1069 1499 5345 7495 26725 37475 384919 1602431 1924595 8012155 9622975 40060775 411478411 576993581 2057392055 2884967905 10286960275 14424839525 616806138089 3084030690445 15420153452225