1187665325 has 48 divisors (see below), whose sum is σ = 1875308544. Its totient is φ = 724555200.

The previous prime is 1187665307. The next prime is 1187665337. The reversal of 1187665325 is 5235667811.

It is not a de Polignac number, because 1187665325 - 2¹⁰ = 1187664301 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 83912 + ... + 97038.

It is an arithmetic number, because the mean of its divisors is an integer number (39068928).

Almost surely, 2^1187665325 is an apocalyptic number.

It is an amenable number.

1187665325 is a deficient number, since it is larger than the sum of its proper divisors (687643219).

1187665325 is a wasteful number, since it uses less digits than its factorization.

1187665325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13202 (or 13197 counting only the distinct ones).

The product of its digits is 302400, while the sum is 44.

The square root of 1187665325 is about 34462.5205839619. The cubic root of 1187665325 is about 1059.0050367682.

The spelling of 1187665325 in words is "one billion, one hundred eighty-seven million, six hundred sixty-five thousand, three hundred twenty-five".