866246025 has 12 divisors (see below), whose sum is σ = 1432193552. Its totient is φ = 461997840.

The previous prime is 866245997. The next prime is 866246039. The reversal of 866246025 is 520642668.

It is not a de Polignac number, because 866246025 - 2¹⁰ = 866245001 is a prime.

It is a Duffinian number.

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, 5774899 + ... + 5775048.

Almost surely, 2^866246025 is an apocalyptic number.

It is an amenable number.

866246025 is a deficient number, since it is larger than the sum of its proper divisors (565947527).

866246025 is a wasteful number, since it uses less digits than its factorization.

866246025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11549960 (or 11549955 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 866246025 is about 29432.0577771925. The cubic root of 866246025 is about 953.2652278138.

The spelling of 866246025 in words is "eight hundred sixty-six million, two hundred forty-six thousand, twenty-five".