10021402425 has 24 divisors (see below), whose sum is σ = 16576265440. Its totient is φ = 5342313600.

The previous prime is 10021402399. The next prime is 10021402439. The reversal of 10021402425 is 52420412001.

It is not a de Polignac number, because 10021402425 - 2⁶ = 10021402361 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141786 + ... + 200364.

Almost surely, 2^10021402425 is an apocalyptic number.

10021402425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10021402425 is a deficient number, since it is larger than the sum of its proper divisors (6554863015).

10021402425 is a wasteful number, since it uses less digits than its factorization.

10021402425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60873 (or 60868 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 10021402425 its reverse (52420412001), we get a palindrome (62441814426).

The spelling of 10021402425 in words is "ten billion, twenty-one million, four hundred two thousand, four hundred twenty-five".