1225146986 has 8 divisors (see below), whose sum is σ = 2100252000. Its totient is φ = 525062988.

The previous prime is 1225146983. The next prime is 1225146991. The reversal of 1225146986 is 6896415221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1225146983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43755236 + ... + 43755263.

It is an arithmetic number, because the mean of its divisors is an integer number (262531500).

Almost surely, 2^1225146986 is an apocalyptic number.

1225146986 is a deficient number, since it is larger than the sum of its proper divisors (875105014).

1225146986 is an equidigital number, since it uses as much as digits as its factorization.

1225146986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87510508.

The product of its digits is 207360, while the sum is 44.

The square root of 1225146986 is about 35002.0997370158. The cubic root of 1225146986 is about 1070.0302742766.

The spelling of 1225146986 in words is "one billion, two hundred twenty-five million, one hundred forty-six thousand, nine hundred eighty-six".