1325617251 has 32 divisors (see below), whose sum is σ = 2162380800. Its totient is φ = 705451680.

The previous prime is 1325617217. The next prime is 1325617253. The reversal of 1325617251 is 1527165231.

It is not a de Polignac number, because 1325617251 - 2⁷ = 1325617123 is a prime.

It is a super-2 number, since 2×1325617251² = 3514522192297594002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1325617253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4615 + ... + 51696.

It is an arithmetic number, because the mean of its divisors is an integer number (67574400).

Almost surely, 2^1325617251 is an apocalyptic number.

1325617251 is a deficient number, since it is larger than the sum of its proper divisors (836763549).

1325617251 is a wasteful number, since it uses less digits than its factorization.

1325617251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56399.

The product of its digits is 12600, while the sum is 33.

The square root of 1325617251 is about 36409.0270537404. The cubic root of 1325617251 is about 1098.5151455807.

The spelling of 1325617251 in words is "one billion, three hundred twenty-five million, six hundred seventeen thousand, two hundred fifty-one".