401224425 has 144 divisors (see below), whose sum is σ = 839053440. Its totient is φ = 165473280.

The previous prime is 401224423. The next prime is 401224433. The reversal of 401224425 is 524422104.

It is a happy number.

It is not a de Polignac number, because 401224425 - 2¹ = 401224423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 401224395 and 401224404.

It is not an unprimeable number, because it can be changed into a prime (401224423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5496189 + ... + 5496261.

It is an arithmetic number, because the mean of its divisors is an integer number (5826760).

Almost surely, 2^401224425 is an apocalyptic number.

It is an amenable number.

401224425 is an abundant number, since it is smaller than the sum of its proper divisors (437829015).

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

401224425 is a wasteful number, since it uses less digits than its factorization.

401224425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 136 counting only the distinct ones).

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

The square root of 401224425 is about 20030.5872355256. The cubic root of 401224425 is about 737.5573373022.

Adding to 401224425 its reverse (524422104), we get a palindrome (925646529).

The spelling of 401224425 in words is "four hundred one million, two hundred twenty-four thousand, four hundred twenty-five".