1525213345 has 8 divisors (see below), whose sum is σ = 1830467520. Its totient is φ = 1220029680.

The previous prime is 1525213337. The next prime is 1525213379. The reversal of 1525213345 is 5433125251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1525213345 - 2³ = 1525213337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66300 + ... + 86290.

It is an arithmetic number, because the mean of its divisors is an integer number (228808440).

Almost surely, 2^1525213345 is an apocalyptic number.

It is an amenable number.

1525213345 is a deficient number, since it is larger than the sum of its proper divisors (305254175).

1525213345 is a wasteful number, since it uses less digits than its factorization.

1525213345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35255.

The product of its digits is 18000, while the sum is 31.

The square root of 1525213345 is about 39053.9798868182. The cubic root of 1525213345 is about 1151.0924326238.

Adding to 1525213345 its reverse (5433125251), we get a palindrome (6958338596).

The spelling of 1525213345 in words is "one billion, five hundred twenty-five million, two hundred thirteen thousand, three hundred forty-five".