1525023020 has 12 divisors (see below), whose sum is σ = 3202548384. Its totient is φ = 610009200.

The previous prime is 1525022999. The next prime is 1525023023. The reversal of 1525023020 is 203205251.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 76251151 = 1525023020 / (1 + 5 + 2 + 5 + 0 + 2 + 3 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1525022983 and 1525023001.

It is not an unprimeable number, because it can be changed into a prime (1525023023) 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 3 ways as a sum of consecutive naturals, for example, 38125556 + ... + 38125595.

It is an arithmetic number, because the mean of its divisors is an integer number (266879032).

Almost surely, 2^1525023020 is an apocalyptic number.

1525023020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1525023020 is an abundant number, since it is smaller than the sum of its proper divisors (1677525364).

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

1525023020 is a wasteful number, since it uses less digits than its factorization.

1525023020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76251160 (or 76251158 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 1525023020 is about 39051.5431193186. The cubic root of 1525023020 is about 1151.0445506272.

Adding to 1525023020 its reverse (203205251), we get a palindrome (1728228271).

The spelling of 1525023020 in words is "one billion, five hundred twenty-five million, twenty-three thousand, twenty".