61825859 has 2 divisors, whose sum is σ = 61825860. Its totient is φ = 61825858.

The previous prime is 61825849. The next prime is 61825871. The reversal of 61825859 is 95852816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61825859 - 2¹⁶ = 61760323 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61825849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30912929 + 30912930.

It is an arithmetic number, because the mean of its divisors is an integer number (30912930).

Almost surely, 2^61825859 is an apocalyptic number.

61825859 is a deficient number, since it is larger than the sum of its proper divisors (1).

61825859 is an equidigital number, since it uses as much as digits as its factorization.

61825859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 44.

The square root of 61825859 is about 7862.9421338326. The cubic root of 61825859 is about 395.4182590870.

The spelling of 61825859 in words is "sixty-one million, eight hundred twenty-five thousand, eight hundred fifty-nine".