1225551434 has 4 divisors (see below), whose sum is σ = 1838327154. Its totient is φ = 612775716.

The previous prime is 1225551409. The next prime is 1225551451. The reversal of 1225551434 is 4341555221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4341555221 = 401 ⋅10826821.

It can be written as a sum of positive squares in only one way, i.e., 1112022409 + 113529025 = 33347^2 + 10655^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1225551434.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306387857 + ... + 306387860.

Almost surely, 2^1225551434 is an apocalyptic number.

1225551434 is a deficient number, since it is larger than the sum of its proper divisors (612775720).

1225551434 is an equidigital number, since it uses as much as digits as its factorization.

1225551434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612775719.

The product of its digits is 24000, while the sum is 32.

The square root of 1225551434 is about 35007.8767422419. The cubic root of 1225551434 is about 1070.1480081746.

The spelling of 1225551434 in words is "one billion, two hundred twenty-five million, five hundred fifty-one thousand, four hundred thirty-four".