1325931545 has 4 divisors (see below), whose sum is σ = 1591117860. Its totient is φ = 1060745232.

The previous prime is 1325931521. The next prime is 1325931547. The reversal of 1325931545 is 5451395231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5451395231 = 73 ⋅74676647.

It can be written as a sum of positive squares in 2 ways, for example, as 239042521 + 1086889024 = 15461^2 + 32968^2 .

It is a cyclic number.

It is not a de Polignac number, because 1325931545 - 2¹⁴ = 1325915161 is a prime.

It is a super-3 number, since 3×1325931545³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1325931499 and 1325931508.

It is not an unprimeable number, because it can be changed into a prime (1325931547) 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, 132593150 + ... + 132593159.

It is an arithmetic number, because the mean of its divisors is an integer number (397779465).

Almost surely, 2^1325931545 is an apocalyptic number.

It is an amenable number.

1325931545 is a deficient number, since it is larger than the sum of its proper divisors (265186315).

1325931545 is an equidigital number, since it uses as much as digits as its factorization.

1325931545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265186314.

The product of its digits is 81000, while the sum is 38.

The square root of 1325931545 is about 36413.3429528243. The cubic root of 1325931545 is about 1098.6019553132.

The spelling of 1325931545 in words is "one billion, three hundred twenty-five million, nine hundred thirty-one thousand, five hundred forty-five".