1380525515 has 4 divisors (see below), whose sum is σ = 1656630624. Its totient is φ = 1104420408.

The previous prime is 1380525499. The next prime is 1380525539. The reversal of 1380525515 is 5155250831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5155250831 = 2411 ⋅2138221.

It is a cyclic number.

It is not a de Polignac number, because 1380525515 - 2⁴ = 1380525499 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138052547 + ... + 138052556.

It is an arithmetic number, because the mean of its divisors is an integer number (414157656).

Almost surely, 2^1380525515 is an apocalyptic number.

1380525515 is a deficient number, since it is larger than the sum of its proper divisors (276105109).

1380525515 is an equidigital number, since it uses as much as digits as its factorization.

1380525515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276105108.

The product of its (nonzero) digits is 30000, while the sum is 35.

The square root of 1380525515 is about 37155.4237628909. The cubic root of 1380525515 is about 1113.4775860293.

The spelling of 1380525515 in words is "one billion, three hundred eighty million, five hundred twenty-five thousand, five hundred fifteen".