1255431404 has 6 divisors (see below), whose sum is σ = 2197004964. Its totient is φ = 627715700.

The previous prime is 1255431391. The next prime is 1255431467. The reversal of 1255431404 is 4041345521.

It is a super-2 number, since 2×1255431404² = 3152216020298822432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156928922 + ... + 156928929.

It is an arithmetic number, because the mean of its divisors is an integer number (366167494).

Almost surely, 2^1255431404 is an apocalyptic number.

It is an amenable number.

1255431404 is a deficient number, since it is larger than the sum of its proper divisors (941573560).

1255431404 is a wasteful number, since it uses less digits than its factorization.

1255431404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313857855 (or 313857853 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 1255431404 is about 35432.0674530855. The cubic root of 1255431404 is about 1078.7753047069.

Adding to 1255431404 its reverse (4041345521), we get a palindrome (5296776925).

The spelling of 1255431404 in words is "one billion, two hundred fifty-five million, four hundred thirty-one thousand, four hundred four".