61725198800 has 30 divisors (see below), whose sum is σ = 148294791078. Its totient is φ = 24690079360.

The previous prime is 61725198797. The next prime is 61725198803. The reversal of 61725198800 is 889152716.

It is an interprime number because it is at equal distance from previous prime (61725198797) and next prime (61725198803).

It can be written as a sum of positive squares in 3 ways, for example, as 12735573904 + 48989624896 = 112852^2 + 221336^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61725198803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77156099 + ... + 77156898.

Almost surely, 2^61725198800 is an apocalyptic number.

It is an amenable number.

61725198800 is an abundant number, since it is smaller than the sum of its proper divisors (86569592278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61725198800 is a wasteful number, since it uses less digits than its factorization.

61725198800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154313015 (or 154313004 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 47.

The spelling of 61725198800 in words is "sixty-one billion, seven hundred twenty-five million, one hundred ninety-eight thousand, eight hundred".