1225405033 has 8 divisors (see below), whose sum is σ = 1297793448. Its totient is φ = 1153050624.

The previous prime is 1225405001. The next prime is 1225405037. The reversal of 1225405033 is 3305045221.

It can be written as a sum of positive squares in 4 ways, for example, as 850130649 + 375274384 = 29157^2 + 19372^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1225405033 - 2⁵ = 1225405001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1225404989 and 1225405007.

It is not an unprimeable number, because it can be changed into a prime (1225405037) 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, 136285 + ... + 144997.

It is an arithmetic number, because the mean of its divisors is an integer number (162224181).

Almost surely, 2^1225405033 is an apocalyptic number.

It is an amenable number.

1225405033 is a deficient number, since it is larger than the sum of its proper divisors (72388415).

1225405033 is an equidigital number, since it uses as much as digits as its factorization.

1225405033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17003.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 1225405033 is about 35005.7857075084. The cubic root of 1225405033 is about 1070.1053941661.

The spelling of 1225405033 in words is "one billion, two hundred twenty-five million, four hundred five thousand, thirty-three".