1225838411578 has 16 divisors (see below), whose sum is σ = 2014754049504. Its totient is φ = 554744653360.

The previous prime is 1225838411573. The next prime is 1225838411579. The reversal of 1225838411578 is 8751148385221.

It is a super-2 number, since 2×1225838411578² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1225838411573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122726125 + ... + 122736112.

It is an arithmetic number, because the mean of its divisors is an integer number (125922128094).

Almost surely, 2^{1225838411578} is an apocalyptic number.

1225838411578 is a deficient number, since it is larger than the sum of its proper divisors (788915637926).

1225838411578 is a wasteful number, since it uses less digits than its factorization.

1225838411578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245462477.

The product of its digits is 4300800, while the sum is 55.

The spelling of 1225838411578 in words is "one trillion, two hundred twenty-five billion, eight hundred thirty-eight million, four hundred eleven thousand, five hundred seventy-eight".