1225126016 has 32 divisors (see below), whose sum is σ = 2475074880. Its totient is φ = 603930880.

The previous prime is 1225126009. The next prime is 1225126033. The reversal of 1225126016 is 6106215221.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58316 + ... + 76491.

It is an arithmetic number, because the mean of its divisors is an integer number (77346090).

Almost surely, 2^1225126016 is an apocalyptic number.

1225126016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1225126016 is an abundant number, since it is smaller than the sum of its proper divisors (1249948864).

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

1225126016 is an equidigital number, since it uses as much as digits as its factorization.

1225126016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134892 (or 134880 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1225126016 is about 35001.8001822763. The cubic root of 1225126016 is about 1070.0241692505.

The spelling of 1225126016 in words is "one billion, two hundred twenty-five million, one hundred twenty-six thousand, sixteen".