120778491025 has 24 divisors (see below), whose sum is σ = 151264552824. Its totient is φ = 95659353600.

The previous prime is 120778491019. The next prime is 120778491047. The reversal of 120778491025 is 520194877021.

It is a Cunningham number, because it is equal to 347532²+1.

It can be written as a sum of positive squares in 12 ways, for example, as 49832972289 + 70945518736 = 223233^2 + 266356^2 .

It is not a de Polignac number, because 120778491025 - 2⁷ = 120778490897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1230255 + ... + 1324795.

It is an arithmetic number, because the mean of its divisors is an integer number (6302689701).

Almost surely, 2^120778491025 is an apocalyptic number.

It is an amenable number.

120778491025 is a deficient number, since it is larger than the sum of its proper divisors (30486061799).

120778491025 is a wasteful number, since it uses less digits than its factorization.

120778491025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95061 (or 95056 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 120778491025 in words is "one hundred twenty billion, seven hundred seventy-eight million, four hundred ninety-one thousand, twenty-five".