401143025 has 12 divisors (see below), whose sum is σ = 503009100. Its totient is φ = 317306880.

The previous prime is 401143021. The next prime is 401143037. The reversal of 401143025 is 520341104.

It can be written as a sum of positive squares in 6 ways, for example, as 4376464 + 396766561 = 2092^2 + 19919^2 .

It is not a de Polignac number, because 401143025 - 2² = 401143021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 401142988 and 401143006.

It is not an unprimeable number, because it can be changed into a prime (401143021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87920 + ... + 92369.

It is an arithmetic number, because the mean of its divisors is an integer number (41917425).

Almost surely, 2^401143025 is an apocalyptic number.

It is an amenable number.

401143025 is a deficient number, since it is larger than the sum of its proper divisors (101866075).

401143025 is a wasteful number, since it uses less digits than its factorization.

401143025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180388 (or 180383 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 401143025 is about 20028.5552399568. Note that the first 3 decimals coincide. The cubic root of 401143025 is about 737.5074556366.

Adding to 401143025 its reverse (520341104), we get a palindrome (921484129).

The spelling of 401143025 in words is "four hundred one million, one hundred forty-three thousand, twenty-five".