61654625 has 16 divisors (see below), whose sum is σ = 78039936. Its totient is φ = 48622000.

The previous prime is 61654603. The next prime is 61654633. The reversal of 61654625 is 52645616.

61654625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61654625 - 2¹² = 61650529 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5402 + ... + 12348.

It is an arithmetic number, because the mean of its divisors is an integer number (4877496).

Almost surely, 2^61654625 is an apocalyptic number.

It is an amenable number.

61654625 is a deficient number, since it is larger than the sum of its proper divisors (16385311).

61654625 is an equidigital number, since it uses as much as digits as its factorization.

61654625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7033 (or 7023 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 61654625 is about 7852.0459117354. The cubic root of 61654625 is about 395.0528690650.

Subtracting from 61654625 its reverse (52645616), we obtain a palindrome (9009009).

The spelling of 61654625 in words is "sixty-one million, six hundred fifty-four thousand, six hundred twenty-five".