401021112525 has 96 divisors (see below), whose sum is σ = 753626764800. Its totient is φ = 186377721600.

The previous prime is 401021112461. The next prime is 401021112529. The reversal of 401021112525 is 525211120104.

It is a happy number.

It is not a de Polignac number, because 401021112525 - 2⁶ = 401021112461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 401021112495 and 401021112504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401021112529) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3265282 + ... + 3385868.

It is an arithmetic number, because the mean of its divisors is an integer number (7850278800).

Almost surely, 2^401021112525 is an apocalyptic number.

It is an amenable number.

401021112525 is a deficient number, since it is larger than the sum of its proper divisors (352605652275).

401021112525 is a wasteful number, since it uses less digits than its factorization.

401021112525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120779 (or 120774 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

Adding to 401021112525 its reverse (525211120104), we get a palindrome (926232232629).

The spelling of 401021112525 in words is "four hundred one billion, twenty-one million, one hundred twelve thousand, five hundred twenty-five".