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137807425 = 5273721283
BaseRepresentation
bin10000011011011…
…00011001000001
3100121022100020201
420031230121001
5240234314200
621401405201
73262225630
oct1015543101
9317270221
10137807425
1170874838
123a199801
1322720372
1414433517
15c171c6a
hex836c641

137807425 has 24 divisors (see below), whose sum is σ = 200580416. Its totient is φ = 91938240.

The previous prime is 137807419. The next prime is 137807441. The reversal of 137807425 is 524708731.

It is not a de Polignac number, because 137807425 - 27 = 137807297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4167 + ... + 17116.

Almost surely, 2137807425 is an apocalyptic number.

It is an amenable number.

137807425 is a deficient number, since it is larger than the sum of its proper divisors (62772991).

137807425 is a wasteful number, since it uses less digits than its factorization.

137807425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21337 (or 21332 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 137807425 is about 11739.1407266461. The cubic root of 137807425 is about 516.5244365118.

The spelling of 137807425 in words is "one hundred thirty-seven million, eight hundred seven thousand, four hundred twenty-five".

Divisors: 1 5 7 25 35 37 175 185 259 925 1295 6475 21283 106415 148981 532075 744905 787471 3724525 3937355 5512297 19686775 27561485 137807425