1245975355 has 4 divisors (see below), whose sum is σ = 1495170432. Its totient is φ = 996780280.

The previous prime is 1245975323. The next prime is 1245975371. The reversal of 1245975355 is 5535795421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5535795421 = 13 ⋅425830417.

It is not a de Polignac number, because 1245975355 - 2⁵ = 1245975323 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124597531 + ... + 124597540.

It is an arithmetic number, because the mean of its divisors is an integer number (373792608).

Almost surely, 2^1245975355 is an apocalyptic number.

1245975355 is a deficient number, since it is larger than the sum of its proper divisors (249195077).

1245975355 is an equidigital number, since it uses as much as digits as its factorization.

1245975355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249195076.

The product of its digits is 945000, while the sum is 46.

The square root of 1245975355 is about 35298.3760957923. The cubic root of 1245975355 is about 1076.0599907013.

The spelling of 1245975355 in words is "one billion, two hundred forty-five million, nine hundred seventy-five thousand, three hundred fifty-five".