1381025515 has 12 divisors (see below), whose sum is σ = 1760450976. Its totient is φ = 1039829888.

The previous prime is 1381025381. The next prime is 1381025519. The reversal of 1381025515 is 5155201831.

It is not a de Polignac number, because 1381025515 - 2⁹ = 1381025003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381025519) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 476419 + ... + 479308.

It is an arithmetic number, because the mean of its divisors is an integer number (146704248).

Almost surely, 2^1381025515 is an apocalyptic number.

1381025515 is a deficient number, since it is larger than the sum of its proper divisors (379425461).

1381025515 is an equidigital number, since it uses as much as digits as its factorization.

1381025515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955766 (or 955749 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 31.

The square root of 1381025515 is about 37162.1516465341. The cubic root of 1381025515 is about 1113.6119965822.

The spelling of 1381025515 in words is "one billion, three hundred eighty-one million, twenty-five thousand, five hundred fifteen".