213515025 has 12 divisors (see below), whose sum is σ = 353011632. Its totient is φ = 113874640.

The previous prime is 213515017. The next prime is 213515051. The reversal of 213515025 is 520515312.

It is a happy number.

It is not a de Polignac number, because 213515025 - 2³ = 213515017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213514986 and 213515004.

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, 1423359 + ... + 1423508.

It is an arithmetic number, because the mean of its divisors is an integer number (29417636).

Almost surely, 2^213515025 is an apocalyptic number.

213515025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213515025 is a deficient number, since it is larger than the sum of its proper divisors (139496607).

213515025 is a wasteful number, since it uses less digits than its factorization.

213515025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846880 (or 2846875 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 213515025 is about 14612.1533320726. The cubic root of 213515025 is about 597.6902168016.

The spelling of 213515025 in words is "two hundred thirteen million, five hundred fifteen thousand, twenty-five".