61204461625 has 8 divisors (see below), whose sum is σ = 76383168264. Its totient is φ = 48963569200.

The previous prime is 61204461623. The next prime is 61204461631. The reversal of 61204461625 is 52616440216.

It can be written as a sum of positive squares in 4 ways, for example, as 295702416 + 60908759209 = 17196^2 + 246797^2 .

It is not a de Polignac number, because 61204461625 - 2¹ = 61204461623 is a prime.

It is a super-2 number, since 2×61204461625² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61204461623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244817722 + ... + 244817971.

It is an arithmetic number, because the mean of its divisors is an integer number (9547896033).

Almost surely, 2^61204461625 is an apocalyptic number.

It is an amenable number.

61204461625 is a deficient number, since it is larger than the sum of its proper divisors (15178706639).

61204461625 is an equidigital number, since it uses as much as digits as its factorization.

61204461625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489635708 (or 489635698 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 61204461625 in words is "sixty-one billion, two hundred four million, four hundred sixty-one thousand, six hundred twenty-five".