405531125245 has 32 divisors (see below), whose sum is σ = 513654916320. Its totient is φ = 306885196800.

The previous prime is 405531125239. The next prime is 405531125267. The reversal of 405531125245 is 542521135504.

It can be written as a sum of positive squares in 16 ways, for example, as 1470032281 + 404061092964 = 38341^2 + 635658^2 .

It is not a de Polignac number, because 405531125245 - 2¹¹ = 405531123197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5349547 + ... + 5424823.

It is an arithmetic number, because the mean of its divisors is an integer number (16051716135).

Almost surely, 2^405531125245 is an apocalyptic number.

It is an amenable number.

405531125245 is a deficient number, since it is larger than the sum of its proper divisors (108123791075).

405531125245 is a wasteful number, since it uses less digits than its factorization.

405531125245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76065.

The product of its (nonzero) digits is 120000, while the sum is 37.

The spelling of 405531125245 in words is "four hundred five billion, five hundred thirty-one million, one hundred twenty-five thousand, two hundred forty-five".