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157398125 = 54713547
BaseRepresentation
bin10010110000110…
…11010001101101
3101222011122122012
421120123101231
5310243220000
623341331005
73620601443
oct1130332155
9358148565
10157398125
11809355a5
1244866a65
13267bc3b1
1416c92b93
15dc41735
hex961b46d

157398125 has 20 divisors (see below), whose sum is σ = 199511136. Its totient is φ = 124110000.

The previous prime is 157398077. The next prime is 157398127. The reversal of 157398125 is 521893751.

157398125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 157398125 - 26 = 157398061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157398127) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 42602 + ... + 46148.

Almost surely, 2157398125 is an apocalyptic number.

It is an amenable number.

157398125 is a deficient number, since it is larger than the sum of its proper divisors (42113011).

157398125 is an frugal number, since it uses more digits than its factorization.

With its predecessor (157398124) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (3623).

157398125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3638 (or 3623 counting only the distinct ones).

The product of its digits is 75600, while the sum is 41.

The square root of 157398125 is about 12545.8409443130. The cubic root of 157398125 is about 539.9246865702.

The spelling of 157398125 in words is "one hundred fifty-seven million, three hundred ninety-eight thousand, one hundred twenty-five".

Divisors: 1 5 25 71 125 355 625 1775 3547 8875 17735 44375 88675 251837 443375 1259185 2216875 6295925 31479625 157398125