1255665420106 has 8 divisors (see below), whose sum is σ = 1883583449604. Its totient is φ = 627804270240.

The previous prime is 1255665420101. The next prime is 1255665420173. The reversal of 1255665420106 is 6010245665521.

It can be written as a sum of positive squares in 2 ways, for example, as 993229498881 + 262435921225 = 996609^2 + 512285^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×1255665420106³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1255665420101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14164675 + ... + 14253046.

Almost surely, 2^{1255665420106} is an apocalyptic number.

1255665420106 is a deficient number, since it is larger than the sum of its proper divisors (627918029498).

1255665420106 is a wasteful number, since it uses less digits than its factorization.

1255665420106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28439816.

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 1255665420106 in words is "one trillion, two hundred fifty-five billion, six hundred sixty-five million, four hundred twenty thousand, one hundred six".