1325121504044 has 24 divisors (see below), whose sum is σ = 2558255215488. Its totient is φ = 596677599360.

The previous prime is 1325121504019. The next prime is 1325121504127. The reversal of 1325121504044 is 4404051215231.

It is a self number, because there is not a number n which added to its sum of digits gives 1325121504044.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310767452 + ... + 310771715.

It is an arithmetic number, because the mean of its divisors is an integer number (106593967312).

Almost surely, 2^{1325121504044} is an apocalyptic number.

It is an amenable number.

1325121504044 is a deficient number, since it is larger than the sum of its proper divisors (1233133711444).

1325121504044 is a wasteful number, since it uses less digits than its factorization.

1325121504044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621539225 (or 621539223 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 1325121504044 its reverse (4404051215231), we get a palindrome (5729172719275).

The spelling of 1325121504044 in words is "one trillion, three hundred twenty-five billion, one hundred twenty-one million, five hundred four thousand, forty-four".