400303525 has 12 divisors (see below), whose sum is σ = 497971972. Its totient is φ = 319213440.

The previous prime is 400303513. The next prime is 400303591. The reversal of 400303525 is 525303004.

It can be written as a sum of positive squares in 6 ways, for example, as 7986276 + 392317249 = 2826^2 + 19807^2 .

It is not a de Polignac number, because 400303525 - 2¹¹ = 400301477 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400303496 and 400303505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17754 + ... + 33403.

Almost surely, 2^400303525 is an apocalyptic number.

It is an amenable number.

400303525 is a deficient number, since it is larger than the sum of its proper divisors (97668447).

400303525 is a wasteful number, since it uses less digits than its factorization.

400303525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51480 (or 51475 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 400303525 is about 20007.5866860549. The cubic root of 400303525 is about 736.9926185524.

Adding to 400303525 its reverse (525303004), we get a palindrome (925606529).

The spelling of 400303525 in words is "four hundred million, three hundred three thousand, five hundred twenty-five".