213872425 has 12 divisors (see below), whose sum is σ = 285602380. Its totient is φ = 157936320.

The previous prime is 213872401. The next prime is 213872431. The reversal of 213872425 is 524278312.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 90839961 + 123032464 = 9531^2 + 11092^2 .

It is not a de Polignac number, because 213872425 - 2⁷ = 213872297 is a prime.

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, 328710 + ... + 329359.

Almost surely, 2^213872425 is an apocalyptic number.

213872425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213872425 is a deficient number, since it is larger than the sum of its proper divisors (71729955).

213872425 is a wasteful number, since it uses less digits than its factorization.

213872425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658092 (or 658087 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

The square root of 213872425 is about 14624.3777645410. The cubic root of 213872425 is about 598.0235195054.

The spelling of 213872425 in words is "two hundred thirteen million, eight hundred seventy-two thousand, four hundred twenty-five".