1325431035545 has 4 divisors (see below), whose sum is σ = 1590517242660. Its totient is φ = 1060344828432.

The previous prime is 1325431035541. The next prime is 1325431035559. The reversal of 1325431035545 is 5455301345231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 528273126976 + 797157908569 = 726824^2 + 892837^2 .

It is a cyclic number.

It is not a de Polignac number, because 1325431035545 - 2² = 1325431035541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1325431035541) 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, 132543103550 + ... + 132543103559.

It is an arithmetic number, because the mean of its divisors is an integer number (397629310665).

Almost surely, 2^{1325431035545} is an apocalyptic number.

It is an amenable number.

1325431035545 is a deficient number, since it is larger than the sum of its proper divisors (265086207115).

1325431035545 is an equidigital number, since it uses as much as digits as its factorization.

1325431035545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265086207114.

The product of its (nonzero) digits is 540000, while the sum is 41.

The spelling of 1325431035545 in words is "one trillion, three hundred twenty-five billion, four hundred thirty-one million, thirty-five thousand, five hundred forty-five".