1525252645 has 48 divisors (see below), whose sum is σ = 2256543360. Its totient is φ = 984057984.

The previous prime is 1525252633. The next prime is 1525252649. The reversal of 1525252645 is 5462525251.

It is not a de Polignac number, because 1525252645 - 2⁹ = 1525252133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1525252649) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 729792 + ... + 731878.

It is an arithmetic number, because the mean of its divisors is an integer number (47011320).

Almost surely, 2^1525252645 is an apocalyptic number.

It is an amenable number.

1525252645 is a deficient number, since it is larger than the sum of its proper divisors (731290715).

1525252645 is a wasteful number, since it uses less digits than its factorization.

1525252645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2282 (or 2275 counting only the distinct ones).

The product of its digits is 120000, while the sum is 37.

The square root of 1525252645 is about 39054.4830333215. The cubic root of 1525252645 is about 1151.1023192285.

Adding to 1525252645 its reverse (5462525251), we get a palindrome (6987777896).

The spelling of 1525252645 in words is "one billion, five hundred twenty-five million, two hundred fifty-two thousand, six hundred forty-five".