1255501345 has 32 divisors (see below), whose sum is σ = 1800506880. Its totient is φ = 821736960.

The previous prime is 1255501343. The next prime is 1255501369. The reversal of 1255501345 is 5431055521.

It is not a de Polignac number, because 1255501345 - 2¹ = 1255501343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255501343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 456675 + ... + 459415.

It is an arithmetic number, because the mean of its divisors is an integer number (56265840).

Almost surely, 2^1255501345 is an apocalyptic number.

It is an amenable number.

1255501345 is a deficient number, since it is larger than the sum of its proper divisors (545005535).

1255501345 is a wasteful number, since it uses less digits than its factorization.

1255501345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3345.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 1255501345 is about 35433.0544125115. The cubic root of 1255501345 is about 1078.7953374548.

Adding to 1255501345 its reverse (5431055521), we get a palindrome (6686556866).

The spelling of 1255501345 in words is "one billion, two hundred fifty-five million, five hundred one thousand, three hundred forty-five".