61748725 has 12 divisors (see below), whose sum is σ = 76752900. Its totient is φ = 49280000.

The previous prime is 61748711. The next prime is 61748749. The reversal of 61748725 is 52784716.

It can be written as a sum of positive squares in 6 ways, for example, as 3470769 + 58277956 = 1863^2 + 7634^2 .

It is not a de Polignac number, because 61748725 - 2¹¹ = 61746677 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8475 + ... + 13975.

It is an arithmetic number, because the mean of its divisors is an integer number (6396075).

Almost surely, 2^61748725 is an apocalyptic number.

It is an amenable number.

61748725 is a deficient number, since it is larger than the sum of its proper divisors (15004175).

61748725 is a wasteful number, since it uses less digits than its factorization.

61748725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5960 (or 5955 counting only the distinct ones).

The product of its digits is 94080, while the sum is 40.

The square root of 61748725 is about 7858.0356960248. The cubic root of 61748725 is about 395.2537492561.

The spelling of 61748725 in words is "sixty-one million, seven hundred forty-eight thousand, seven hundred twenty-five".