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131080225 = 5250910301
BaseRepresentation
bin1111101000000…
…10000000100001
3100010122120021011
413310002000201
5232024031400
621001300521
73151110043
oct764020041
9303576234
10131080225
1167a9a571
1237a94741
1321206383
14135a1a93
15b7938ba
hex7d02021

131080225 has 12 divisors (see below), whose sum is σ = 162874620. Its totient is φ = 104648000.

The previous prime is 131080193. The next prime is 131080247. The reversal of 131080225 is 522080131.

It can be written as a sum of positive squares in 6 ways, for example, as 13075456 + 118004769 = 3616^2 + 10863^2 .

It is not a de Polignac number, because 131080225 - 25 = 131080193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131080196 and 131080205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7575 + ... + 17875.

It is an arithmetic number, because the mean of its divisors is an integer number (13572885).

Almost surely, 2131080225 is an apocalyptic number.

It is an amenable number.

131080225 is a deficient number, since it is larger than the sum of its proper divisors (31794395).

131080225 is a wasteful number, since it uses less digits than its factorization.

131080225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10820 (or 10815 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 131080225 is about 11449.0272512559. The cubic root of 131080225 is about 507.9789617117.

The spelling of 131080225 in words is "one hundred thirty-one million, eighty thousand, two hundred twenty-five".

Divisors: 1 5 25 509 2545 10301 12725 51505 257525 5243209 26216045 131080225