408725690531 has 32 divisors (see below), whose sum is σ = 459770826240. Its totient is φ = 361460461824.

The previous prime is 408725690519. The next prime is 408725690533. The reversal of 408725690531 is 135096527804.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 408725690531 - 2³⁴ = 391545821347 is a prime.

It is a super-2 number, since 2×408725690531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 408725690531.

It is not an unprimeable number, because it can be changed into a prime (408725690533) 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, 23987591 + ... + 24004623.

It is an arithmetic number, because the mean of its divisors is an integer number (14367838320).

It is a 1-persistent number, because it is pandigital, but 2⋅408725690531 = 817451381062 is not.

Almost surely, 2^408725690531 is an apocalyptic number.

408725690531 is a deficient number, since it is larger than the sum of its proper divisors (51045135709).

408725690531 is a wasteful number, since it uses less digits than its factorization.

408725690531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18395.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 408725690531 in words is "four hundred eight billion, seven hundred twenty-five million, six hundred ninety thousand, five hundred thirty-one".