1255201005 has 16 divisors (see below), whose sum is σ = 2073106944. Its totient is φ = 647845440.

The previous prime is 1255200979. The next prime is 1255201007. The reversal of 1255201005 is 5001025521.

1255201005 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1255201005 - 2⁹ = 1255200493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255201007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1349214 + ... + 1350143.

It is an arithmetic number, because the mean of its divisors is an integer number (129569184).

Almost surely, 2^1255201005 is an apocalyptic number.

1255201005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1255201005 is a deficient number, since it is larger than the sum of its proper divisors (817905939).

1255201005 is a wasteful number, since it uses less digits than its factorization.

1255201005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2699396.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 1255201005 is about 35428.8160259414. The cubic root of 1255201005 is about 1078.7093077498.

Adding to 1255201005 its reverse (5001025521), we get a palindrome (6256226526).

The spelling of 1255201005 in words is "one billion, two hundred fifty-five million, two hundred one thousand, five".