1375025640 has 128 divisors (see below), whose sum is σ = 4234032000. Its totient is φ = 357094400.

The previous prime is 1375025623. The next prime is 1375025653. The reversal of 1375025640 is 465205731.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 946915 + ... + 948365.

It is an arithmetic number, because the mean of its divisors is an integer number (33078375).

Almost surely, 2^1375025640 is an apocalyptic number.

1375025640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1375025640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2117016000).

1375025640 is an abundant number, since it is smaller than the sum of its proper divisors (2859006360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1375025640 is a wasteful number, since it uses less digits than its factorization.

1375025640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667 (or 1663 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 1375025640 is about 37081.3381635561. The cubic root of 1375025640 is about 1111.9969571022.

The spelling of 1375025640 in words is "one billion, three hundred seventy-five million, twenty-five thousand, six hundred forty".