401040025 has 12 divisors (see below), whose sum is σ = 513332224. Its totient is φ = 310482000.

The previous prime is 401040023. The next prime is 401040053. The reversal of 401040025 is 520040104.

It is not a de Polignac number, because 401040025 - 2¹ = 401040023 is a prime.

It is a super-3 number, since 3×401040025³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401039990 and 401040008.

It is not an unprimeable number, because it can be changed into a prime (401040023) 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 11 ways as a sum of consecutive naturals, for example, 257961 + ... + 259510.

Almost surely, 2^401040025 is an apocalyptic number.

It is an amenable number.

401040025 is a deficient number, since it is larger than the sum of its proper divisors (112292199).

401040025 is a wasteful number, since it uses less digits than its factorization.

401040025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517512 (or 517507 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 401040025 is about 20025.9837461234. The cubic root of 401040025 is about 737.4443278860. Note that the first 3 decimals are identical.

Adding to 401040025 its reverse (520040104), we get a palindrome (921080129).

The spelling of 401040025 in words is "four hundred one million, forty thousand, twenty-five".