401663325 has 96 divisors (see below), whose sum is σ = 812170240. Its totient is φ = 171072000.

The previous prime is 401663321. The next prime is 401663333. The reversal of 401663325 is 523366104.

It is not a de Polignac number, because 401663325 - 2² = 401663321 is a prime.

It is a super-2 number, since 2×401663325² = 322666853300111250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401663292 and 401663301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401663321) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 668025 + ... + 668625.

Almost surely, 2^401663325 is an apocalyptic number.

It is an amenable number.

401663325 is an abundant number, since it is smaller than the sum of its proper divisors (410506915).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401663325 is a wasteful number, since it uses less digits than its factorization.

401663325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707 (or 702 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 401663325 is about 20041.5399857396. The cubic root of 401663325 is about 737.8261776567.

The spelling of 401663325 in words is "four hundred one million, six hundred sixty-three thousand, three hundred twenty-five".