400530550425 has 24 divisors (see below), whose sum is σ = 662656027776. Its totient is φ = 213472578240.

The previous prime is 400530550379. The next prime is 400530550517. The reversal of 400530550425 is 524055035004.

It is not a de Polignac number, because 400530550425 - 2¹⁵ = 400530517657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1684174 + ... + 1907223.

It is an arithmetic number, because the mean of its divisors is an integer number (27610667824).

Almost surely, 2^400530550425 is an apocalyptic number.

It is an amenable number.

400530550425 is a deficient number, since it is larger than the sum of its proper divisors (262125477351).

400530550425 is a wasteful number, since it uses less digits than its factorization.

400530550425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3592897 (or 3592892 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 33.

Adding to 400530550425 its reverse (524055035004), we get a palindrome (924585585429).

The spelling of 400530550425 in words is "four hundred billion, five hundred thirty million, five hundred fifty thousand, four hundred twenty-five".