100642610225 has 6 divisors (see below), whose sum is σ = 124796836710. Its totient is φ = 80514088160.

The previous prime is 100642610213. The next prime is 100642610267. The reversal of 100642610225 is 522016246001.

It can be written as a sum of positive squares in 3 ways, for example, as 203689984 + 100438920241 = 14272^2 + 316921^2 .

It is not a de Polignac number, because 100642610225 - 2⁴ = 100642610209 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2012852180 + ... + 2012852229.

It is an arithmetic number, because the mean of its divisors is an integer number (20799472785).

Almost surely, 2^100642610225 is an apocalyptic number.

It is an amenable number.

100642610225 is a deficient number, since it is larger than the sum of its proper divisors (24154226485).

100642610225 is an equidigital number, since it uses as much as digits as its factorization.

100642610225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4025704419 (or 4025704414 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 100642610225 its reverse (522016246001), we get a palindrome (622658856226).

The spelling of 100642610225 in words is "one hundred billion, six hundred forty-two million, six hundred ten thousand, two hundred twenty-five".