1225205433 has 10 divisors (see below), whose sum is σ = 1830245274. Its totient is φ = 816803568.

The previous prime is 1225205411. The next prime is 1225205459. The reversal of 1225205433 is 3345025221.

It is a happy number.

1225205433 is a `hidden beast` number, since 1 + 2 + 25 + 205 + 433 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1217521449 + 7683984 = 34893^2 + 2772^2 .

It is not a de Polignac number, because 1225205433 - 2¹⁸ = 1224943289 is a prime.

It is a super-2 number, since 2×1225205433² = 3002256706105434978, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1225205397 and 1225205406.

It is not an unprimeable number, because it can be changed into a prime (1225201433) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7562916 + ... + 7563077.

Almost surely, 2^1225205433 is an apocalyptic number.

It is an amenable number.

1225205433 is a deficient number, since it is larger than the sum of its proper divisors (605039841).

1225205433 is an equidigital number, since it uses as much as digits as its factorization.

1225205433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15126005 (or 15125996 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1225205433 is about 35002.9346341132. The cubic root of 1225205433 is about 1070.0472896676.

The spelling of 1225205433 in words is "one billion, two hundred twenty-five million, two hundred five thousand, four hundred thirty-three".