61461225 has 36 divisors (see below), whose sum is σ = 125813376. Its totient is φ = 28095840.

The previous prime is 61461223. The next prime is 61461229. The reversal of 61461225 is 52216416.

It is not a de Polignac number, because 61461225 - 2¹ = 61461223 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61461223) 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, 17937 + ... + 21086.

It is an arithmetic number, because the mean of its divisors is an integer number (3494816).

Almost surely, 2^61461225 is an apocalyptic number.

It is an amenable number.

61461225 is an abundant number, since it is smaller than the sum of its proper divisors (64352151).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61461225 is a wasteful number, since it uses less digits than its factorization.

61461225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39046 (or 39038 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 61461225 is about 7839.7209771777. The cubic root of 61461225 is about 394.6393653345.

The spelling of 61461225 in words is "sixty-one million, four hundred sixty-one thousand, two hundred twenty-five".