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831419738425 = 5283893964333
BaseRepresentation
bin11000001100101000111…
…10100110100100111001
32221111001001220211100101
430012110132212210321
5102110221423112200
61433540550235401
7114032233112653
oct14062436464471
92844031824311
10831419738425
112a066a849271
12115174955b61
1360530511583
142c35317d6d3
15169618ae26a
hexc1947a6939

831419738425 has 12 divisors (see below), whose sum is σ = 1031083630060. Its totient is φ = 665056336320.

The previous prime is 831419738399. The next prime is 831419738449. The reversal of 831419738425 is 524837914138.

It can be written as a sum of positive squares in 6 ways, for example, as 27594525456 + 803825212969 = 166116^2 + 896563^2 .

It is not a de Polignac number, because 831419738425 - 25 = 831419738393 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1772442 + ... + 2191891.

Almost surely, 2831419738425 is an apocalyptic number.

It is an amenable number.

831419738425 is a deficient number, since it is larger than the sum of its proper divisors (199663891635).

831419738425 is a wasteful number, since it uses less digits than its factorization.

831419738425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3972732 (or 3972727 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 55.

The spelling of 831419738425 in words is "eight hundred thirty-one billion, four hundred nineteen million, seven hundred thirty-eight thousand, four hundred twenty-five".

Divisors: 1 5 25 8389 41945 209725 3964333 19821665 99108325 33256789537 166283947685 831419738425