2225161604 has 6 divisors (see below), whose sum is σ = 3894032814. Its totient is φ = 1112580800.

The previous prime is 2225161597. The next prime is 2225161639. The reversal of 2225161604 is 4061615222.

It can be written as a sum of positive squares in only one way, i.e., 1575931204 + 649230400 = 39698^2 + 25480^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278145197 + ... + 278145204.

It is an arithmetic number, because the mean of its divisors is an integer number (649005469).

Almost surely, 2^2225161604 is an apocalyptic number.

It is an amenable number.

2225161604 is a deficient number, since it is larger than the sum of its proper divisors (1668871210).

2225161604 is a wasteful number, since it uses less digits than its factorization.

2225161604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556290405 (or 556290403 counting only the distinct ones).

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

The square root of 2225161604 is about 47171.6186281539. The cubic root of 2225161604 is about 1305.5309914238.

Adding to 2225161604 its reverse (4061615222), we get a palindrome (6286776826).

The spelling of 2225161604 in words is "two billion, two hundred twenty-five million, one hundred sixty-one thousand, six hundred four".