400116525 has 12 divisors (see below), whose sum is σ = 661526112. Its totient is φ = 213395440.

The previous prime is 400116517. The next prime is 400116527. The reversal of 400116525 is 525611004.

It is not a de Polignac number, because 400116525 - 2³ = 400116517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400116495 and 400116504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400116527) 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, 2667369 + ... + 2667518.

It is an arithmetic number, because the mean of its divisors is an integer number (55127176).

Almost surely, 2^400116525 is an apocalyptic number.

It is an amenable number.

400116525 is a deficient number, since it is larger than the sum of its proper divisors (261409587).

400116525 is a wasteful number, since it uses less digits than its factorization.

400116525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5334900 (or 5334895 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 400116525 is about 20002.9129128735. The cubic root of 400116525 is about 736.8778397434.

Adding to 400116525 its reverse (525611004), we get a palindrome (925727529).

The spelling of 400116525 in words is "four hundred million, one hundred sixteen thousand, five hundred twenty-five".