213115025 has 12 divisors (see below), whose sum is σ = 264637824. Its totient is φ = 170250000.

The previous prime is 213115013. The next prime is 213115031. The reversal of 213115025 is 520511312.

It is a happy number.

It is not a de Polignac number, because 213115025 - 2²² = 208920721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213114988 and 213115006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13100 + ... + 24450.

It is an arithmetic number, because the mean of its divisors is an integer number (22053152).

Almost surely, 2^213115025 is an apocalyptic number.

213115025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213115025 is a deficient number, since it is larger than the sum of its proper divisors (51522799).

213115025 is a wasteful number, since it uses less digits than its factorization.

213115025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12112 (or 12107 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 213115025 is about 14598.4596790209. The cubic root of 213115025 is about 597.3167449773.

Adding to 213115025 its reverse (520511312), we get a palindrome (733626337).

The spelling of 213115025 in words is "two hundred thirteen million, one hundred fifteen thousand, twenty-five".