1325131545 has 16 divisors (see below), whose sum is σ = 2212394112. Its totient is φ = 676008960.

The previous prime is 1325131537. The next prime is 1325131547. The reversal of 1325131545 is 5451315231.

It is not a de Polignac number, because 1325131545 - 2³ = 1325131537 is a prime.

It is a super-2 number, since 2×1325131545² = 3511947223108174050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1325131547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1920136 + ... + 1920825.

It is an arithmetic number, because the mean of its divisors is an integer number (138274632).

Almost surely, 2^1325131545 is an apocalyptic number.

1325131545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1325131545 is a deficient number, since it is larger than the sum of its proper divisors (887262567).

1325131545 is a wasteful number, since it uses less digits than its factorization.

1325131545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3840992.

The product of its digits is 9000, while the sum is 30.

The square root of 1325131545 is about 36402.3563110961. The cubic root of 1325131545 is about 1098.3809639193.

Adding to 1325131545 its reverse (5451315231), we get a palindrome (6776446776).

It can be divided in two parts, 1325 and 131545, that added together give a triangular number (132870 = T₅₁₅).

The spelling of 1325131545 in words is "one billion, three hundred twenty-five million, one hundred thirty-one thousand, five hundred forty-five".