100145525 has 6 divisors (see below), whose sum is σ = 124180482. Its totient is φ = 80116400.

The previous prime is 100145491. The next prime is 100145527. The reversal of 100145525 is 525541001.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 5476 + 100140049 = 74^2 + 10007^2 .

It is a de Polignac number, because none of the positive numbers 2^k-100145525 is a prime.

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 100145525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100145527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2002886 + ... + 2002935.

It is an arithmetic number, because the mean of its divisors is an integer number (20696747).

Almost surely, 2^100145525 is an apocalyptic number.

It is an amenable number.

100145525 is a deficient number, since it is larger than the sum of its proper divisors (24034957).

100145525 is an equidigital number, since it uses as much as digits as its factorization.

100145525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4005831 (or 4005826 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 100145525 is about 10007.2736047337. The cubic root of 100145525 is about 464.3839299685.

Adding to 100145525 its reverse (525541001), we get a palindrome (625686526).

The spelling of 100145525 in words is "one hundred million, one hundred forty-five thousand, five hundred twenty-five".