611205225 has 48 divisors (see below), whose sum is σ = 1047552000. Its totient is φ = 314233920.

The previous prime is 611205223. The next prime is 611205229. The reversal of 611205225 is 522502116.

It is a happy number.

It is not a de Polignac number, because 611205225 - 2¹ = 611205223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 611205195 and 611205204.

It is not an unprimeable number, because it can be changed into a prime (611205223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 253576 + ... + 255974.

It is an arithmetic number, because the mean of its divisors is an integer number (21824000).

Almost surely, 2^611205225 is an apocalyptic number.

It is an amenable number.

611205225 is a deficient number, since it is larger than the sum of its proper divisors (436346775).

611205225 is a wasteful number, since it uses less digits than its factorization.

611205225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534 (or 2529 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 611205225 is about 24722.5650974975. The cubic root of 611205225 is about 848.6507891640.

The spelling of 611205225 in words is "six hundred eleven million, two hundred five thousand, two hundred twenty-five".