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12943925 = 52539769
BaseRepresentation
bin110001011000…
…001000110101
3220100121201122
4301120020311
511303201200
61141233325
7215010251
oct61301065
926317648
1012943925
117340a65
124402845
1328b2837
141a0d261
15120a385
hexc58235

12943925 has 12 divisors (see below), whose sum is σ = 16354980. Its totient is φ = 10158720.

The previous prime is 12943901. The next prime is 12943927. The reversal of 12943925 is 52934921.

It can be written as a sum of positive squares in 6 ways, for example, as 148996 + 12794929 = 386^2 + 3577^2 .

It is not a de Polignac number, because 12943925 - 210 = 12942901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12943927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3560 + ... + 6209.

It is an arithmetic number, because the mean of its divisors is an integer number (1362915).

Almost surely, 212943925 is an apocalyptic number.

It is an amenable number.

12943925 is a deficient number, since it is larger than the sum of its proper divisors (3411055).

12943925 is an equidigital number, since it uses as much as digits as its factorization.

12943925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9832 (or 9827 counting only the distinct ones).

The product of its digits is 19440, while the sum is 35.

The square root of 12943925 is about 3597.7666683653. The cubic root of 12943925 is about 234.7949017812.

The spelling of 12943925 in words is "twelve million, nine hundred forty-three thousand, nine hundred twenty-five".

Divisors: 1 5 25 53 265 1325 9769 48845 244225 517757 2588785 12943925