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157508125 = 54252013
BaseRepresentation
bin10010110001101…
…10001000011101
3101222101020112021
421120312020131
5310310230000
623343540141
73621540235
oct1130661035
9358336467
10157508125
1180a00205
12448ba651
132682a498
1416cc0cc5
15dc6411a
hex963621d

157508125 has 10 divisors (see below), whose sum is σ = 196822934. Its totient is φ = 126006000.

The previous prime is 157508123. The next prime is 157508129. The reversal of 157508125 is 521805751.

It can be written as a sum of positive squares in 5 ways, for example, as 12859396 + 144648729 = 3586^2 + 12027^2 .

It is not a de Polignac number, because 157508125 - 21 = 157508123 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157508123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 125382 + ... + 126631.

Almost surely, 2157508125 is an apocalyptic number.

It is an amenable number.

157508125 is a deficient number, since it is larger than the sum of its proper divisors (39314809).

157508125 is an frugal number, since it uses more digits than its factorization.

157508125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252033 (or 252018 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 34.

The square root of 157508125 is about 12550.2241015848. The cubic root of 157508125 is about 540.0504353898.

The spelling of 157508125 in words is "one hundred fifty-seven million, five hundred eight thousand, one hundred twenty-five".

Divisors: 1 5 25 125 625 252013 1260065 6300325 31501625 157508125