1612225405 has 16 divisors (see below), whose sum is σ = 2216064384. Its totient is φ = 1103019840.

The previous prime is 1612225403. The next prime is 1612225421. The reversal of 1612225405 is 5045222161.

It is not a de Polignac number, because 1612225405 - 2¹ = 1612225403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1612225403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36486 + ... + 67495.

It is an arithmetic number, because the mean of its divisors is an integer number (138504024).

Almost surely, 2^1612225405 is an apocalyptic number.

It is an amenable number.

1612225405 is a deficient number, since it is larger than the sum of its proper divisors (603838979).

1612225405 is a wasteful number, since it uses less digits than its factorization.

1612225405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104436.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1612225405 is about 40152.5267573536. The cubic root of 1612225405 is about 1172.5784818421.

Adding to 1612225405 its reverse (5045222161), we get a palindrome (6657447566).

The spelling of 1612225405 in words is "one billion, six hundred twelve million, two hundred twenty-five thousand, four hundred five".