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135620125 = 531278543
BaseRepresentation
bin10000001010101…
…10011000011101
3100110012012211121
420011112120131
5234204321000
621242450541
73234515644
oct1005263035
9313165747
10135620125
116a610453
1239503a51
13221358c4
141402435b
15bd8db1a
hex815661d

135620125 has 16 divisors (see below), whose sum is σ = 170606592. Its totient is φ = 107629200.

The previous prime is 135620117. The next prime is 135620171. The reversal of 135620125 is 521026531.

It is not a de Polignac number, because 135620125 - 23 = 135620117 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 135620125.

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, 11604 + ... + 20146.

It is an arithmetic number, because the mean of its divisors is an integer number (10662912).

Almost surely, 2135620125 is an apocalyptic number.

It is an amenable number.

135620125 is a deficient number, since it is larger than the sum of its proper divisors (34986467).

135620125 is an equidigital number, since it uses as much as digits as its factorization.

135620125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8685 (or 8675 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 135620125 is about 11645.6053943108. The cubic root of 135620125 is about 513.7770649740. Note that the first 3 decimals are identical.

Adding to 135620125 its reverse (521026531), we get a palindrome (656646656).

The spelling of 135620125 in words is "one hundred thirty-five million, six hundred twenty thousand, one hundred twenty-five".

Divisors: 1 5 25 125 127 635 3175 8543 15875 42715 213575 1067875 1084961 5424805 27124025 135620125