103225261666 has 4 divisors (see below), whose sum is σ = 154837892502. Its totient is φ = 51612630832.

The previous prime is 103225261663. The next prime is 103225261679. The reversal of 103225261666 is 666162522301.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 91963595025 + 11261666641 = 303255^2 + 106121^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (103225261663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25806315415 + ... + 25806315418.

Almost surely, 2^103225261666 is an apocalyptic number.

103225261666 is a deficient number, since it is larger than the sum of its proper divisors (51612630836).

103225261666 is an equidigital number, since it uses as much as digits as its factorization.

103225261666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51612630835.

The product of its (nonzero) digits is 155520, while the sum is 40.

Adding to 103225261666 its reverse (666162522301), we get a palindrome (769387783967).

The spelling of 103225261666 in words is "one hundred three billion, two hundred twenty-five million, two hundred sixty-one thousand, six hundred sixty-six".