825400590858 has 16 divisors (see below), whose sum is σ = 1834223535360. Its totient is φ = 275133530268.

The previous prime is 825400590803. The next prime is 825400590913. The reversal of 825400590858 is 858095004528.

It is a happy number.

825400590858 is a `hidden beast` number, since 8 + 2 + 5 + 40 + 0 + 590 + 8 + 5 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (825400590803) and next prime (825400590913).

It is a super-2 number, since 2×825400590858² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 15285196127 = 825400590858 / (8 + 2 + 5 + 4 + 0 + 0 + 5 + 9 + 0 + 8 + 5 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7642598010 + ... + 7642598117.

It is an arithmetic number, because the mean of its divisors is an integer number (114638970960).

Almost surely, 2^825400590858 is an apocalyptic number.

825400590858 is an abundant number, since it is smaller than the sum of its proper divisors (1008822944502).

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

825400590858 is a wasteful number, since it uses less digits than its factorization.

825400590858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15285196138 (or 15285196132 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 54.

The spelling of 825400590858 in words is "eight hundred twenty-five billion, four hundred million, five hundred ninety thousand, eight hundred fifty-eight".