1355621225 has 48 divisors (see below), whose sum is σ = 2081616768. Its totient is φ = 854461440.

The previous prime is 1355621209. The next prime is 1355621231. The reversal of 1355621225 is 5221265531.

It is not a de Polignac number, because 1355621225 - 2⁴ = 1355621209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1355621191 and 1355621200.

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, 122627 + ... + 133223.

It is an arithmetic number, because the mean of its divisors is an integer number (43367016).

Almost surely, 2^1355621225 is an apocalyptic number.

It is an amenable number.

1355621225 is a deficient number, since it is larger than the sum of its proper divisors (725995543).

1355621225 is a wasteful number, since it uses less digits than its factorization.

1355621225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10674 (or 10669 counting only the distinct ones).

The product of its digits is 18000, while the sum is 32.

The square root of 1355621225 is about 36818.7618613120. The cubic root of 1355621225 is about 1106.7413083617.

Adding to 1355621225 its reverse (5221265531), we get a palindrome (6576886756).

The spelling of 1355621225 in words is "one billion, three hundred fifty-five million, six hundred twenty-one thousand, two hundred twenty-five".