1255065101 has 4 divisors (see below), whose sum is σ = 1295551104. Its totient is φ = 1214579100.

The previous prime is 1255065089. The next prime is 1255065107. The reversal of 1255065101 is 1015605521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1015605521 = 7 ⋅145086503.

It is a cyclic number.

It is not a de Polignac number, because 1255065101 - 2¹⁸ = 1254802957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255065107) 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, 20242955 + ... + 20243016.

It is an arithmetic number, because the mean of its divisors is an integer number (323887776).

Almost surely, 2^1255065101 is an apocalyptic number.

It is an amenable number.

1255065101 is a deficient number, since it is larger than the sum of its proper divisors (40486003).

1255065101 is an equidigital number, since it uses as much as digits as its factorization.

1255065101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40486002.

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 1255065101 is about 35426.8979872639. The cubic root of 1255065101 is about 1078.6703747554.

The spelling of 1255065101 in words is "one billion, two hundred fifty-five million, sixty-five thousand, one hundred one".