401425404 has 12 divisors (see below), whose sum is σ = 936659304. Its totient is φ = 133808464.

The previous prime is 401425399. The next prime is 401425429. The reversal of 401425404 is 404524104.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×401425404² = 322284709953126432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16726047 + ... + 16726070.

It is an arithmetic number, because the mean of its divisors is an integer number (78054942).

Almost surely, 2^401425404 is an apocalyptic number.

It is an amenable number.

401425404 is an abundant number, since it is smaller than the sum of its proper divisors (535233900).

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

401425404 is a wasteful number, since it uses less digits than its factorization.

401425404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33452124 (or 33452122 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 401425404 is about 20035.6034099300. The cubic root of 401425404 is about 737.6804677191.

Adding to 401425404 its reverse (404524104), we get a palindrome (805949508).

The spelling of 401425404 in words is "four hundred one million, four hundred twenty-five thousand, four hundred four".