10821009025 has 12 divisors (see below), whose sum is σ = 13453466800. Its totient is φ = 8633958480.

The previous prime is 10821009013. The next prime is 10821009053. The reversal of 10821009025 is 52090012801.

It is not a de Polignac number, because 10821009025 - 2¹⁷ = 10820877953 is a prime.

It is a super-3 number, since 3×10821009025³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10821008984 and 10821009002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 561555 + ... + 580504.

Almost surely, 2^10821009025 is an apocalyptic number.

It is an amenable number.

10821009025 is a deficient number, since it is larger than the sum of its proper divisors (2632457775).

10821009025 is a wasteful number, since it uses less digits than its factorization.

10821009025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142448 (or 1142443 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The spelling of 10821009025 in words is "ten billion, eight hundred twenty-one million, nine thousand, twenty-five".