31778048225 has 48 divisors (see below), whose sum is σ = 49750149120. Its totient is φ = 19558843200.

The previous prime is 31778048189. The next prime is 31778048293. The reversal of 31778048225 is 52284087713.

It is not a de Polignac number, because 31778048225 - 2¹⁴ = 31778031841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31778048225.

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 47 ways as a sum of consecutive naturals, for example, 47594 + ... + 256556.

It is an arithmetic number, because the mean of its divisors is an integer number (1036461440).

Almost surely, 2^31778048225 is an apocalyptic number.

31778048225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31778048225 is a deficient number, since it is larger than the sum of its proper divisors (17972100895).

31778048225 is a wasteful number, since it uses less digits than its factorization.

31778048225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209070 (or 209065 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 47.

The spelling of 31778048225 in words is "thirty-one billion, seven hundred seventy-eight million, forty-eight thousand, two hundred twenty-five".