1001325515 has 4 divisors (see below), whose sum is σ = 1201590624. Its totient is φ = 801060408.

The previous prime is 1001325509. The next prime is 1001325547. The reversal of 1001325515 is 5155231001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5155231001 = 457 ⋅11280593.

It is a cyclic number.

It is not a de Polignac number, because 1001325515 - 2¹⁴ = 1001309131 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, 100132547 + ... + 100132556.

It is an arithmetic number, because the mean of its divisors is an integer number (300397656).

Almost surely, 2^1001325515 is an apocalyptic number.

1001325515 is a deficient number, since it is larger than the sum of its proper divisors (200265109).

1001325515 is an equidigital number, since it uses as much as digits as its factorization.

1001325515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200265108.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 1001325515 is about 31643.7278935337. The cubic root of 1001325515 is about 1000.4416432559.

Adding to 1001325515 its reverse (5155231001), we get a palindrome (6156556516).

The spelling of 1001325515 in words is "one billion, one million, three hundred twenty-five thousand, five hundred fifteen".