1025328045549 has 4 divisors (see below), whose sum is σ = 1367104060736. Its totient is φ = 683552030364.

The previous prime is 1025328045541. The next prime is 1025328045611. The reversal of 1025328045549 is 9455408235201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1025328045549 - 2³ = 1025328045541 is a prime.

It is a super-3 number, since 3×1025328045549³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1025328045498 and 1025328045507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025328045541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170888007589 + ... + 170888007594.

It is an arithmetic number, because the mean of its divisors is an integer number (341776015184).

Almost surely, 2^{1025328045549} is an apocalyptic number.

It is an amenable number.

1025328045549 is a deficient number, since it is larger than the sum of its proper divisors (341776015187).

1025328045549 is an equidigital number, since it uses as much as digits as its factorization.

1025328045549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341776015186.

The product of its (nonzero) digits is 1728000, while the sum is 48.

The spelling of 1025328045549 in words is "one trillion, twenty-five billion, three hundred twenty-eight million, forty-five thousand, five hundred forty-nine".