401525210 has 16 divisors (see below), whose sum is σ = 765260136. Its totient is φ = 151162368.

The previous prime is 401525207. The next prime is 401525219. The reversal of 401525210 is 12525104.

It can be written as a sum of positive squares in 4 ways, for example, as 288762049 + 112763161 = 16993^2 + 10619^2 .

It is a super-2 number, since 2×401525210² = 322444988531088200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401525219) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1180787 + ... + 1181126.

Almost surely, 2^401525210 is an apocalyptic number.

401525210 is a deficient number, since it is larger than the sum of its proper divisors (363734926).

401525210 is a wasteful number, since it uses less digits than its factorization.

401525210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2361937.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 401525210 is about 20038.0939712339. The cubic root of 401525210 is about 737.7415989074.

The spelling of 401525210 in words is "four hundred one million, five hundred twenty-five thousand, two hundred ten".