61044748025 has 36 divisors (see below), whose sum is σ = 80984389212. Its totient is φ = 45631226880.

The previous prime is 61044748001. The next prime is 61044748049. The reversal of 61044748025 is 52084744016.

It is an interprime number because it is at equal distance from previous prime (61044748001) and next prime (61044748049).

It can be written as a sum of positive squares in 6 ways, for example, as 148328041 + 60896419984 = 12179^2 + 246772^2 .

It is not a de Polignac number, because 61044748025 - 2⁸ = 61044747769 is a prime.

It is a super-2 number, since 2×61044748025² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 612497 + ... + 705153.

It is an arithmetic number, because the mean of its divisors is an integer number (2249566367).

Almost surely, 2^61044748025 is an apocalyptic number.

It is an amenable number.

61044748025 is a deficient number, since it is larger than the sum of its proper divisors (19939641187).

61044748025 is a wasteful number, since it uses less digits than its factorization.

61044748025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92778 (or 92754 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 41.

The spelling of 61044748025 in words is "sixty-one billion, forty-four million, seven hundred forty-eight thousand, twenty-five".