1525022120 has 64 divisors (see below), whose sum is σ = 3504384000. Its totient is φ = 597155328.

The previous prime is 1525022089. The next prime is 1525022173. The reversal of 1525022120 is 212205251.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1525022092 and 1525022101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364601 + ... + 368759.

It is an arithmetic number, because the mean of its divisors is an integer number (54756000).

Almost surely, 2^1525022120 is an apocalyptic number.

1525022120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1525022120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1752192000).

1525022120 is an abundant number, since it is smaller than the sum of its proper divisors (1979361880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1525022120 is a wasteful number, since it uses less digits than its factorization.

1525022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4362 (or 4358 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1525022120 is about 39051.5315960847. The cubic root of 1525022120 is about 1151.0443241956.

Adding to 1525022120 its reverse (212205251), we get a palindrome (1737227371).

The spelling of 1525022120 in words is "one billion, five hundred twenty-five million, twenty-two thousand, one hundred twenty".