1225146225 has 48 divisors (see below), whose sum is σ = 2174271552. Its totient is φ = 606504960.

The previous prime is 1225146199. The next prime is 1225146229. The reversal of 1225146225 is 5226415221.

It is not a de Polignac number, because 1225146225 - 2⁶ = 1225146161 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1225146192 and 1225146201.

It is not an unprimeable number, because it can be changed into a prime (1225146229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86494 + ... + 99656.

It is an arithmetic number, because the mean of its divisors is an integer number (45297324).

Almost surely, 2^1225146225 is an apocalyptic number.

1225146225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1225146225 is a deficient number, since it is larger than the sum of its proper divisors (949125327).

1225146225 is a wasteful number, since it uses less digits than its factorization.

1225146225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13266 (or 13261 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 1225146225 is about 35002.0888662377. The cubic root of 1225146225 is about 1070.0300527268.

The spelling of 1225146225 in words is "one billion, two hundred twenty-five million, one hundred forty-six thousand, two hundred twenty-five".