1225421175 has 48 divisors (see below), whose sum is σ = 2215358208. Its totient is φ = 592761600.

The previous prime is 1225421159. The next prime is 1225421189. The reversal of 1225421175 is 5711245221.

It is a happy number.

It is not a de Polignac number, because 1225421175 - 2⁴ = 1225421159 is a prime.

It is a super-2 number, since 2×1225421175² = 3003314112276761250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 413499 + ... + 416451.

It is an arithmetic number, because the mean of its divisors is an integer number (46153296).

Almost surely, 2^1225421175 is an apocalyptic number.

1225421175 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1225421175 is a deficient number, since it is larger than the sum of its proper divisors (989937033).

1225421175 is a wasteful number, since it uses less digits than its factorization.

1225421175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3480 (or 3475 counting only the distinct ones).

The product of its digits is 5600, while the sum is 30.

The square root of 1225421175 is about 35006.0162686359. The cubic root of 1225421175 is about 1070.1100929024.

Adding to 1225421175 its reverse (5711245221), we get a palindrome (6936666396).

The spelling of 1225421175 in words is "one billion, two hundred twenty-five million, four hundred twenty-one thousand, one hundred seventy-five".