1611045225 has 36 divisors (see below), whose sum is σ = 2897731200. Its totient is φ = 855600480.

The previous prime is 1611045221. The next prime is 1611045251. The reversal of 1611045225 is 5225401161.

1611045225 is a `hidden beast` number, since 1 + 611 + 0 + 45 + 2 + 2 + 5 = 666.

It is not a de Polignac number, because 1611045225 - 2² = 1611045221 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1611045221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 38796 + ... + 68754.

Almost surely, 2^1611045225 is an apocalyptic number.

1611045225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1611045225 is a deficient number, since it is larger than the sum of its proper divisors (1286685975).

1611045225 is a wasteful number, since it uses less digits than its factorization.

1611045225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30214 (or 30206 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1611045225 is about 40137.8278560263. The cubic root of 1611045225 is about 1172.2922953335.

Adding to 1611045225 its reverse (5225401161), we get a palindrome (6836446386).

The spelling of 1611045225 in words is "one billion, six hundred eleven million, forty-five thousand, two hundred twenty-five".