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125240505 = 35131016359
BaseRepresentation
bin1110111011100…
…00010010111001
322201122212200020
413131300102321
5224030144010
620232201053
73050345445
oct735602271
9281585606
10125240505
1164771055
1235b39189
131cc40310
14128c1825
15aedd470
hex77704b9

125240505 has 32 divisors (see below), whose sum is σ = 217969920. Its totient is φ = 61036800.

The previous prime is 125240501. The next prime is 125240509. The reversal of 125240505 is 505042521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (125240501) and next prime (125240509).

It is not a de Polignac number, because 125240505 - 22 = 125240501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125240501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16516 + ... + 22874.

It is an arithmetic number, because the mean of its divisors is an integer number (6811560).

Almost surely, 2125240505 is an apocalyptic number.

125240505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125240505 is a deficient number, since it is larger than the sum of its proper divisors (92729415).

125240505 is a wasteful number, since it uses less digits than its factorization.

125240505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6481.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 125240505 is about 11191.0904294443. The cubic root of 125240505 is about 500.3204678901.

The spelling of 125240505 in words is "one hundred twenty-five million, two hundred forty thousand, five hundred five".

Divisors: 1 3 5 13 15 39 65 101 195 303 505 1313 1515 3939 6359 6565 19077 19695 31795 82667 95385 248001 413335 642259 1240005 1926777 3211295 8349367 9633885 25048101 41746835 125240505