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131925205 = 529909829
BaseRepresentation
bin1111101110100…
…00010011010101
3100012020111100201
413313100103111
5232233101310
621031340501
73161226406
oct767202325
9305214321
10131925205
11685173a5
1238221731
1321440b69
14137419ad
15b8ade3a
hex7dd04d5

131925205 has 8 divisors (see below), whose sum is σ = 163769400. Its totient is φ = 101900736.

The previous prime is 131925203. The next prime is 131925229. The reversal of 131925205 is 502529131.

It can be written as a sum of positive squares in 4 ways, for example, as 10903204 + 121022001 = 3302^2 + 11001^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131925205 - 21 = 131925203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131925203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454770 + ... + 455059.

It is an arithmetic number, because the mean of its divisors is an integer number (20471175).

Almost surely, 2131925205 is an apocalyptic number.

It is an amenable number.

131925205 is a deficient number, since it is larger than the sum of its proper divisors (31844195).

131925205 is an equidigital number, since it uses as much as digits as its factorization.

131925205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909863.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 131925205 is about 11485.8697972770. The cubic root of 131925205 is about 509.0681497391.

The spelling of 131925205 in words is "one hundred thirty-one million, nine hundred twenty-five thousand, two hundred five".

Divisors: 1 5 29 145 909829 4549145 26385041 131925205