1420605225 has 72 divisors (see below), whose sum is σ = 2828763392. Its totient is φ = 676771200.

The previous prime is 1420605209. The next prime is 1420605239. The reversal of 1420605225 is 5225060241.

1420605225 is a `hidden beast` number, since 14 + 20 + 605 + 2 + 25 = 666.

It is not a de Polignac number, because 1420605225 - 2⁴ = 1420605209 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 82842 + ... + 98508.

Almost surely, 2^1420605225 is an apocalyptic number.

1420605225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1420605225 is a deficient number, since it is larger than the sum of its proper divisors (1408158167).

1420605225 is a wasteful number, since it uses less digits than its factorization.

1420605225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15727 (or 15719 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1420605225 is about 37690.9170092743. The cubic root of 1420605225 is about 1124.1505291089.

Adding to 1420605225 its reverse (5225060241), we get a palindrome (6645665466).

The spelling of 1420605225 in words is "one billion, four hundred twenty million, six hundred five thousand, two hundred twenty-five".