1255320436 has 12 divisors (see below), whose sum is σ = 2221494660. Its totient is φ = 620607680.

The previous prime is 1255320421. The next prime is 1255320449. The reversal of 1255320436 is 6340235521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 663371536 + 591948900 = 25756^2 + 24330^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1255320398 and 1255320407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1762735 + ... + 1763446.

It is an arithmetic number, because the mean of its divisors is an integer number (185124555).

Almost surely, 2^1255320436 is an apocalyptic number.

It is an amenable number.

1255320436 is a deficient number, since it is larger than the sum of its proper divisors (966174224).

1255320436 is a wasteful number, since it uses less digits than its factorization.

1255320436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3526274 (or 3526272 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 1255320436 is about 35430.5014923582. The cubic root of 1255320436 is about 1078.7435193342.

Adding to 1255320436 its reverse (6340235521), we get a palindrome (7595555957).

The spelling of 1255320436 in words is "one billion, two hundred fifty-five million, three hundred twenty thousand, four hundred thirty-six".