840468225 has 24 divisors (see below), whose sum is σ = 1423471392. Its totient is φ = 437315200.

The previous prime is 840468217. The next prime is 840468247. The reversal of 840468225 is 522864048.

It is not a de Polignac number, because 840468225 - 2³ = 840468217 is a prime.

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, 133587 + ... + 139736.

It is an arithmetic number, because the mean of its divisors is an integer number (59311308).

Almost surely, 2^840468225 is an apocalyptic number.

It is an amenable number.

840468225 is a deficient number, since it is larger than the sum of its proper divisors (583003167).

840468225 is a wasteful number, since it uses less digits than its factorization.

840468225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273377 (or 273372 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 39.

The square root of 840468225 is about 28990.8300157136. The cubic root of 840468225 is about 943.7140763777.

The spelling of 840468225 in words is "eight hundred forty million, four hundred sixty-eight thousand, two hundred twenty-five".