401504452625 has 16 divisors (see below), whose sum is σ = 518356098000. Its totient is φ = 310127574400.

The previous prime is 401504452589. The next prime is 401504452669. The reversal of 401504452625 is 526254405104.

It can be written as a sum of positive squares in 8 ways, for example, as 138401112529 + 263103340096 = 372023^2 + 512936^2 .

It is a de Polignac number, because none of the positive numbers 2^k-401504452625 is a prime.

It is a super-2 number, since 2×401504452625² (a number of 24 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 55376300 + ... + 55383549.

It is an arithmetic number, because the mean of its divisors is an integer number (32397256125).

Almost surely, 2^401504452625 is an apocalyptic number.

It is an amenable number.

401504452625 is a deficient number, since it is larger than the sum of its proper divisors (116851645375).

401504452625 is a wasteful number, since it uses less digits than its factorization.

401504452625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110759893 (or 110759883 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 38.

Adding to 401504452625 its reverse (526254405104), we get a palindrome (927758857729).

The spelling of 401504452625 in words is "four hundred one billion, five hundred four million, four hundred fifty-two thousand, six hundred twenty-five".