1225073808 has 120 divisors (see below), whose sum is σ = 4063503808. Its totient is φ = 350013312.

The previous prime is 1225073803. The next prime is 1225073813. The reversal of 1225073808 is 8083705221.

It is an interprime number because it is at equal distance from previous prime (1225073803) and next prime (1225073813).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1225073803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4710 + ... + 49722.

Almost surely, 2^1225073808 is an apocalyptic number.

1225073808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1225073808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2031751904).

1225073808 is an abundant number, since it is smaller than the sum of its proper divisors (2838430000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225073808 is an equidigital number, since it uses as much as digits as its factorization.

1225073808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45043 (or 45025 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1225073808 is about 35001.0543841182. The cubic root of 1225073808 is about 1070.0089695583.

The spelling of 1225073808 in words is "one billion, two hundred twenty-five million, seventy-three thousand, eight hundred eight".