213168725 has 36 divisors (see below), whose sum is σ = 332082912. Its totient is φ = 132871200.

The previous prime is 213168701. The next prime is 213168727. The reversal of 213168725 is 527861312.

It is a happy number.

213168725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213168725 - 2⁸ = 213168469 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213168727) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16142 + ... + 26208.

Almost surely, 2^213168725 is an apocalyptic number.

213168725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213168725 is a deficient number, since it is larger than the sum of its proper divisors (118914187).

213168725 is a wasteful number, since it uses less digits than its factorization.

213168725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10106 (or 10090 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 213168725 is about 14600.2987983123. The cubic root of 213168725 is about 597.3669107121.

The spelling of 213168725 in words is "two hundred thirteen million, one hundred sixty-eight thousand, seven hundred twenty-five".