1225160787 has 4 divisors (see below), whose sum is σ = 1633547720. Its totient is φ = 816773856.

The previous prime is 1225160771. The next prime is 1225160801. The reversal of 1225160787 is 7870615221.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1225160787 - 2⁴ = 1225160771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225160887) by changing a digit.

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, 204193462 + ... + 204193467.

It is an arithmetic number, because the mean of its divisors is an integer number (408386930).

Almost surely, 2^1225160787 is an apocalyptic number.

1225160787 is a deficient number, since it is larger than the sum of its proper divisors (408386933).

1225160787 is an equidigital number, since it uses as much as digits as its factorization.

1225160787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408386932.

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 1225160787 is about 35002.2968817762. The cubic root of 1225160787 is about 1070.0342921435.

The spelling of 1225160787 in words is "one billion, two hundred twenty-five million, one hundred sixty thousand, seven hundred eighty-seven".