1925550008778 has 32 divisors (see below), whose sum is σ = 4201629645312. Its totient is φ = 583440332400.

The previous prime is 1925550008771. The next prime is 1925550008797. The reversal of 1925550008778 is 8778000555291.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1925550008771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 839326 + ... + 2134377.

It is an arithmetic number, because the mean of its divisors is an integer number (131300926416).

Almost surely, 2^{1925550008778} is an apocalyptic number.

1925550008778 is an abundant number, since it is smaller than the sum of its proper divisors (2276079636534).

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

1925550008778 is a wasteful number, since it uses less digits than its factorization.

1925550008778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2983530.

The product of its (nonzero) digits is 7056000, while the sum is 57.

The spelling of 1925550008778 in words is "one trillion, nine hundred twenty-five billion, five hundred fifty million, eight thousand, seven hundred seventy-eight".