1255397063 has 8 divisors (see below), whose sum is σ = 1322700288. Its totient is φ = 1189153944.

The previous prime is 1255397041. The next prime is 1255397093. The reversal of 1255397063 is 3607935521.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1255397063 - 2¹⁰ = 1255396039 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1255397063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255397093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262595 + ... + 267332.

It is an arithmetic number, because the mean of its divisors is an integer number (165337536).

Almost surely, 2^1255397063 is an apocalyptic number.

1255397063 is a deficient number, since it is larger than the sum of its proper divisors (67303225).

1255397063 is a wasteful number, since it uses less digits than its factorization.

1255397063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530053.

The product of its (nonzero) digits is 170100, while the sum is 41.

The square root of 1255397063 is about 35431.5828463816. The cubic root of 1255397063 is about 1078.7654683642.

The spelling of 1255397063 in words is "one billion, two hundred fifty-five million, three hundred ninety-seven thousand, sixty-three".