1325015523 has 16 divisors (see below), whose sum is σ = 2113985440. Its totient is φ = 815393952.

The previous prime is 1325015519. The next prime is 1325015557. The reversal of 1325015523 is 3255105231.

It is a happy number.

1325015523 is a `hidden beast` number, since 132 + 5 + 0 + 1 + 5 + 523 = 666.

It is not a de Polignac number, because 1325015523 - 2² = 1325015519 is a prime.

It is a super-2 number, since 2×1325015523² = 3511332272381927058, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1325015563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1887136 + ... + 1887837.

It is an arithmetic number, because the mean of its divisors is an integer number (132124090).

Almost surely, 2^1325015523 is an apocalyptic number.

1325015523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1325015523 is a deficient number, since it is larger than the sum of its proper divisors (788969917).

1325015523 is a wasteful number, since it uses less digits than its factorization.

1325015523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3774995 (or 3774989 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1325015523 is about 36400.7626705815. The cubic root of 1325015523 is about 1098.3489067055.

The spelling of 1325015523 in words is "one billion, three hundred twenty-five million, fifteen thousand, five hundred twenty-three".