1525618322 has 18 divisors (see below), whose sum is σ = 2327095029. Its totient is φ = 750132040.

The previous prime is 1525618321. The next prime is 1525618333. The reversal of 1525618322 is 2238165251.

It can be written as a sum of positive squares in 2 ways, for example, as 1410678481 + 114939841 = 37559^2 + 10721^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=27619.

It is a super-2 number, since 2×1525618322² = 4655022528844191368, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1525618321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3921704 + ... + 3922092.

Almost surely, 2^1525618322 is an apocalyptic number.

1525618322 is a deficient number, since it is larger than the sum of its proper divisors (801476707).

1525618322 is an frugal number, since it uses more digits than its factorization.

1525618322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922 (or 462 counting only the distinct ones).

The product of its digits is 28800, while the sum is 35.

The square root of 1525618322 is about 39059.1643791825. The cubic root of 1525618322 is about 1151.1943035542.

Multiplying 1525618322 by its product of digits (28800), we get a square (43937807673600 = 6628560²).

The spelling of 1525618322 in words is "one billion, five hundred twenty-five million, six hundred eighteen thousand, three hundred twenty-two".