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53613874925 = 5213941175309
BaseRepresentation
bin110001111011101000…
…101100111011101101
312010101102222001001022
4301323220230323231
51334300122444200
640344015223525
73605413263152
oct617350547355
9163342861038
1053613874925
11208126a8846
12a483217ba5
13509569a360
142848692229
1515dbc97885
hexc7ba2ceed

53613874925 has 24 divisors (see below), whose sum is σ = 71671636680. Its totient is φ = 39549484800.

The previous prime is 53613874913. The next prime is 53613874927. The reversal of 53613874925 is 52947831635.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 29483980681 + 24129894244 = 171709^2 + 155338^2 .

It is not a de Polignac number, because 53613874925 - 214 = 53613858541 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53613874927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 218171 + ... + 393479.

It is an arithmetic number, because the mean of its divisors is an integer number (2986318195).

Almost surely, 253613874925 is an apocalyptic number.

It is an amenable number.

53613874925 is a deficient number, since it is larger than the sum of its proper divisors (18057761755).

53613874925 is a wasteful number, since it uses less digits than its factorization.

53613874925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176273 (or 176268 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 53.

The spelling of 53613874925 in words is "fifty-three billion, six hundred thirteen million, eight hundred seventy-four thousand, nine hundred twenty-five".

Divisors: 1 5 13 25 65 325 941 4705 12233 23525 61165 175309 305825 876545 2279017 4382725 11395085 56975425 164965769 824828845 2144554997 4124144225 10722774985 53613874925