1225602146 has 8 divisors (see below), whose sum is σ = 1843671900. Its totient is φ = 611044848.

The previous prime is 1225602139. The next prime is 1225602167. The reversal of 1225602146 is 6412065221.

It can be written as a sum of positive squares in 2 ways, for example, as 1222271521 + 3330625 = 34961^2 + 1825^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 877241 + ... + 878636.

Almost surely, 2^1225602146 is an apocalyptic number.

1225602146 is a deficient number, since it is larger than the sum of its proper divisors (618069754).

1225602146 is a wasteful number, since it uses less digits than its factorization.

1225602146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756228.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1225602146 is about 35008.6010288900. The cubic root of 1225602146 is about 1070.1627684954.

Adding to 1225602146 its reverse (6412065221), we get a palindrome (7637667367).

The spelling of 1225602146 in words is "one billion, two hundred twenty-five million, six hundred two thousand, one hundred forty-six".