61111225 has 12 divisors (see below), whose sum is σ = 86603584. Its totient is φ = 41904720.

The previous prime is 61111223. The next prime is 61111229. The reversal of 61111225 is 52211116.

It is not a de Polignac number, because 61111225 - 2¹ = 61111223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61111223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174429 + ... + 174778.

Almost surely, 2^61111225 is an apocalyptic number.

It is an amenable number.

61111225 is a deficient number, since it is larger than the sum of its proper divisors (25492359).

61111225 is a wasteful number, since it uses less digits than its factorization.

61111225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349224 (or 349219 counting only the distinct ones).

The product of its digits is 120, while the sum is 19.

The square root of 61111225 is about 7817.3668840601. The cubic root of 61111225 is about 393.8888281774. Note that the first 4 decimals are identical.

The spelling of 61111225 in words is "sixty-one million, one hundred eleven thousand, two hundred twenty-five".