1375645125 has 32 divisors (see below), whose sum is σ = 2409563520. Its totient is φ = 695059200.

The previous prime is 1375645123. The next prime is 1375645133. The reversal of 1375645125 is 5215465731.

It is not a de Polignac number, because 1375645125 - 2¹ = 1375645123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375645123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89412 + ... + 103661.

It is an arithmetic number, because the mean of its divisors is an integer number (75298860).

Almost surely, 2^1375645125 is an apocalyptic number.

1375645125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1375645125 is a deficient number, since it is larger than the sum of its proper divisors (1033918395).

1375645125 is a wasteful number, since it uses less digits than its factorization.

1375645125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193110 (or 193100 counting only the distinct ones).

The product of its digits is 126000, while the sum is 39.

The square root of 1375645125 is about 37089.6902791059. The cubic root of 1375645125 is about 1112.1639265973.

The spelling of 1375645125 in words is "one billion, three hundred seventy-five million, six hundred forty-five thousand, one hundred twenty-five".