1521425004 has 48 divisors (see below), whose sum is σ = 3901032576. Its totient is φ = 457667200.

The previous prime is 1521424969. The next prime is 1521425023. The reversal of 1521425004 is 4005241251.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 23982 + ... + 60149.

It is an arithmetic number, because the mean of its divisors is an integer number (81271512).

Almost surely, 2^1521425004 is an apocalyptic number.

It is an amenable number.

1521425004 is an abundant number, since it is smaller than the sum of its proper divisors (2379607572).

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

1521425004 is a wasteful number, since it uses less digits than its factorization.

1521425004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84286 (or 84284 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1521425004 is about 39005.4483886546. The cubic root of 1521425004 is about 1150.1386106396.

Adding to 1521425004 its reverse (4005241251), we get a palindrome (5526666255).

The spelling of 1521425004 in words is "one billion, five hundred twenty-one million, four hundred twenty-five thousand, four".