1213225489 has 8 divisors (see below), whose sum is σ = 1386788480. Its totient is φ = 1039723776.

The previous prime is 1213225457. The next prime is 1213225511. The reversal of 1213225489 is 9845223121.

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

It is not a de Polignac number, because 1213225489 - 2⁵ = 1213225457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213229489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40852 + ... + 63994.

It is an arithmetic number, because the mean of its divisors is an integer number (173348560).

Almost surely, 2^1213225489 is an apocalyptic number.

It is an amenable number.

1213225489 is a deficient number, since it is larger than the sum of its proper divisors (173562991).

1213225489 is an equidigital number, since it uses as much as digits as its factorization.

1213225489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30639.

The product of its digits is 34560, while the sum is 37.

The square root of 1213225489 is about 34831.3865500643. The cubic root of 1213225489 is about 1066.5482529466.

The spelling of 1213225489 in words is "one billion, two hundred thirteen million, two hundred twenty-five thousand, four hundred eighty-nine".