1255402355 has 4 divisors (see below), whose sum is σ = 1506482832. Its totient is φ = 1004321880.

The previous prime is 1255402321. The next prime is 1255402363. The reversal of 1255402355 is 5532045521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5532045521 = 3469 ⋅1594709.

It is a de Polignac number, because none of the positive numbers 2^k-1255402355 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125540231 + ... + 125540240.

It is an arithmetic number, because the mean of its divisors is an integer number (376620708).

Almost surely, 2^1255402355 is an apocalyptic number.

1255402355 is a deficient number, since it is larger than the sum of its proper divisors (251080477).

1255402355 is an equidigital number, since it uses as much as digits as its factorization.

1255402355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251080476.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 1255402355 is about 35431.6575254390. The cubic root of 1255402355 is about 1078.7669841712.

Adding to 1255402355 its reverse (5532045521), we get a palindrome (6787447876).

The spelling of 1255402355 in words is "one billion, two hundred fifty-five million, four hundred two thousand, three hundred fifty-five".