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8135125 = 53151431
BaseRepresentation
bin11111000010000111010101
3120022022021221
4133002013111
54040311000
6450210341
7126101365
oct37020725
916268257
108135125
114657049
1228839b1
1318baaab
14111a9a5
15aaa61a
hex7c21d5

8135125 has 16 divisors (see below), whose sum is σ = 10243584. Its totient is φ = 6450000.

The previous prime is 8135093. The next prime is 8135131. The reversal of 8135125 is 5215318.

It is a happy number.

It is not a de Polignac number, because 8135125 - 25 = 8135093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8135125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18660 + ... + 19090.

It is an arithmetic number, because the mean of its divisors is an integer number (640224).

Almost surely, 28135125 is an apocalyptic number.

It is an amenable number.

8135125 is a deficient number, since it is larger than the sum of its proper divisors (2108459).

8135125 is a wasteful number, since it uses less digits than its factorization.

8135125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597 (or 587 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 8135125 is about 2852.2140522759. The cubic root of 8135125 is about 201.1197606469.

The spelling of 8135125 in words is "eight million, one hundred thirty-five thousand, one hundred twenty-five".

Divisors: 1 5 25 125 151 431 755 2155 3775 10775 18875 53875 65081 325405 1627025 8135125