400213221325 has 24 divisors (see below), whose sum is σ = 498283429248. Its totient is φ = 318868630080.

The previous prime is 400213221319. The next prime is 400213221337. The reversal of 400213221325 is 523122312004.

It is not a de Polignac number, because 400213221325 - 2¹⁷ = 400213090253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 400213221325.

It is a congruent number.

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, 39490959 + ... + 39501091.

It is an arithmetic number, because the mean of its divisors is an integer number (20761809552).

Almost surely, 2^400213221325 is an apocalyptic number.

It is an amenable number.

400213221325 is a deficient number, since it is larger than the sum of its proper divisors (98070207923).

400213221325 is a wasteful number, since it uses less digits than its factorization.

400213221325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16413 (or 16408 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 400213221325 its reverse (523122312004), we get a palindrome (923335533329).

The spelling of 400213221325 in words is "four hundred billion, two hundred thirteen million, two hundred twenty-one thousand, three hundred twenty-five".