214525404 has 18 divisors (see below), whose sum is σ = 542272640. Its totient is φ = 71508456.

The previous prime is 214525351. The next prime is 214525411. The reversal of 214525404 is 404525412.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×214525404² = 92042297922726432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2979484 + ... + 2979555.

Almost surely, 2^214525404 is an apocalyptic number.

It is an amenable number.

214525404 is an abundant number, since it is smaller than the sum of its proper divisors (327747236).

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

214525404 is a wasteful number, since it uses less digits than its factorization.

214525404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5959049 (or 5959044 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 214525404 is about 14646.6857684597. The cubic root of 214525404 is about 598.6315144518.

It can be divided in two parts, 2145 and 25404, that multiplied together give a triangular number (54491580 = T₁₀₄₃₉).

The spelling of 214525404 in words is "two hundred fourteen million, five hundred twenty-five thousand, four hundred four".