822725451 has 32 divisors (see below), whose sum is σ = 1255878720. Its totient is φ = 531919872.

The previous prime is 822725443. The next prime is 822725467. The reversal of 822725451 is 154527228.

It is a happy number.

It is not a de Polignac number, because 822725451 - 2³ = 822725443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (822725401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 351481 + ... + 353813.

It is an arithmetic number, because the mean of its divisors is an integer number (39246210).

Almost surely, 2^822725451 is an apocalyptic number.

822725451 is a deficient number, since it is larger than the sum of its proper divisors (433153269).

822725451 is a wasteful number, since it uses less digits than its factorization.

822725451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732 (or 2726 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 822725451 is about 28683.1910881617. The cubic root of 822725451 is about 937.0260055116.

The spelling of 822725451 in words is "eight hundred twenty-two million, seven hundred twenty-five thousand, four hundred fifty-one".