812025408 has 56 divisors (see below), whose sum is σ = 2217806080. Its totient is φ = 261941760.

The previous prime is 812025407. The next prime is 812025449. The reversal of 812025408 is 804520218.

It is not an unprimeable number, because it can be changed into a prime (812025407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62263 + ... + 74166.

It is an arithmetic number, because the mean of its divisors is an integer number (39603680).

Almost surely, 2^812025408 is an apocalyptic number.

It is an amenable number.

812025408 is an abundant number, since it is smaller than the sum of its proper divisors (1405780672).

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

812025408 is a wasteful number, since it uses less digits than its factorization.

812025408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136475 (or 136465 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 812025408 is about 28496.0595170631. The cubic root of 812025408 is about 932.9460697222.

The spelling of 812025408 in words is "eight hundred twelve million, twenty-five thousand, four hundred eight".