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145125207 = 3271227113
BaseRepresentation
bin10001010011001…
…10111101010111
3101010002010100200
420221212331113
5244123001312
622222311543
73411354363
oct1051467527
9333063320
10145125207
1174a12797
12407285b3
13240b3106
14153ba2a3
15cb1a0dc
hex8a66f57

145125207 has 12 divisors (see below), whose sum is σ = 212578704. Its totient is φ = 95387040.

The previous prime is 145125203. The next prime is 145125217. The reversal of 145125207 is 702521541.

145125207 is a `hidden beast` number, since 1 + 451 + 2 + 5 + 207 = 666.

It is not a de Polignac number, because 145125207 - 22 = 145125203 is a prime.

It is a super-2 number, since 2×1451252072 = 42122651413585698, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145125203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112918 + ... + 114195.

It is an arithmetic number, because the mean of its divisors is an integer number (17714892).

Almost surely, 2145125207 is an apocalyptic number.

145125207 is a deficient number, since it is larger than the sum of its proper divisors (67453497).

145125207 is a wasteful number, since it uses less digits than its factorization.

145125207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227190 (or 227187 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 145125207 is about 12046.7923946584. The cubic root of 145125207 is about 525.5099589126.

Adding to 145125207 its reverse (702521541), we get a palindrome (847646748).

The spelling of 145125207 in words is "one hundred forty-five million, one hundred twenty-five thousand, two hundred seven".

Divisors: 1 3 9 71 213 639 227113 681339 2044017 16125023 48375069 145125207