1255241001 has 16 divisors (see below), whose sum is σ = 1913269248. Its totient is φ = 717085200.

The previous prime is 1255240979. The next prime is 1255241003. The reversal of 1255241001 is 1001425521.

It is not a de Polignac number, because 1255241001 - 2⁵ = 1255240969 is a prime.

It is a super-3 number, since 3×1255241001³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1255241003) 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, 112066 + ... + 122756.

It is an arithmetic number, because the mean of its divisors is an integer number (119579328).

Almost surely, 2^1255241001 is an apocalyptic number.

It is an amenable number.

1255241001 is a deficient number, since it is larger than the sum of its proper divisors (658028247).

1255241001 is a wasteful number, since it uses less digits than its factorization.

1255241001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16292.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1255241001 is about 35429.3804772254. The cubic root of 1255241001 is about 1078.7207650380.

Adding to 1255241001 its reverse (1001425521), we get a palindrome (2256666522).

The spelling of 1255241001 in words is "one billion, two hundred fifty-five million, two hundred forty-one thousand, one".