1381375925 has 12 divisors (see below), whose sum is σ = 1713689796. Its totient is φ = 1104595200.

The previous prime is 1381375913. The next prime is 1381375967. The reversal of 1381375925 is 5295731831.

It can be written as a sum of positive squares in 6 ways, for example, as 246427204 + 1134948721 = 15698^2 + 33689^2 .

It is not a de Polignac number, because 1381375925 - 2⁸ = 1381375669 is a prime.

It is a Duffinian number.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 48995 + ... + 71855.

It is an arithmetic number, because the mean of its divisors is an integer number (142807483).

Almost surely, 2^1381375925 is an apocalyptic number.

It is an amenable number.

1381375925 is a deficient number, since it is larger than the sum of its proper divisors (332313871).

1381375925 is a wasteful number, since it uses less digits than its factorization.

1381375925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25288 (or 25283 counting only the distinct ones).

The product of its digits is 226800, while the sum is 44.

The square root of 1381375925 is about 37166.8659561174. The cubic root of 1381375925 is about 1113.7061748520.

The spelling of 1381375925 in words is "one billion, three hundred eighty-one million, three hundred seventy-five thousand, nine hundred twenty-five".