61335625 has 20 divisors (see below), whose sum is σ = 82551700. Its totient is φ = 45288000.

The previous prime is 61335623. The next prime is 61335647. The reversal of 61335625 is 52653316.

It can be written as a sum of positive squares in 10 ways, for example, as 47734281 + 13601344 = 6909^2 + 3688^2 .

It is not a de Polignac number, because 61335625 - 2¹ = 61335623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61335623) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4351 + ... + 11899.

It is an arithmetic number, because the mean of its divisors is an integer number (4127585).

Almost surely, 2^61335625 is an apocalyptic number.

61335625 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61335625 is a deficient number, since it is larger than the sum of its proper divisors (21216075).

61335625 is an equidigital number, since it uses as much as digits as its factorization.

61335625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7582 (or 7567 counting only the distinct ones).

The product of its digits is 16200, while the sum is 31.

The square root of 61335625 is about 7831.7063913301. The cubic root of 61335625 is about 394.3703582929.

The spelling of 61335625 in words is "sixty-one million, three hundred thirty-five thousand, six hundred twenty-five".