1525420322 has 16 divisors (see below), whose sum is σ = 2319459840. Its totient is φ = 752286912.

The previous prime is 1525420307. The next prime is 1525420327. The reversal of 1525420322 is 2230245251.

It is a junction number, because it is equal to n+sod(n) for n = 1525420291 and 1525420300.

It is not an unprimeable number, because it can be changed into a prime (1525420327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169898 + ... + 178650.

It is an arithmetic number, because the mean of its divisors is an integer number (144966240).

Almost surely, 2^1525420322 is an apocalyptic number.

1525420322 is a deficient number, since it is larger than the sum of its proper divisors (794039518).

1525420322 is a wasteful number, since it uses less digits than its factorization.

1525420322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9937.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1525420322 is about 39056.6296805037. The cubic root of 1525420322 is about 1151.1444994124.

Adding to 1525420322 its reverse (2230245251), we get a palindrome (3755665573).

The spelling of 1525420322 in words is "one billion, five hundred twenty-five million, four hundred twenty thousand, three hundred twenty-two".