213725 has 12 divisors (see below), whose sum is σ = 270816. Its totient is φ = 167280.

The previous prime is 213721. The next prime is 213727. The reversal of 213725 is 527312.

It is not a de Polignac number, because 213725 - 2² = 213721 is a prime.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 213697 and 213706.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 213725.

It is not an unprimeable number, because it can be changed into a prime (213721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2024 + ... + 2126.

It is an arithmetic number, because the mean of its divisors is an integer number (22568).

2²¹³⁷²⁵ is an apocalyptic number.

213725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213725 is a deficient number, since it is larger than the sum of its proper divisors (57091).

213725 is a wasteful number, since it uses less digits than its factorization.

213725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 191 counting only the distinct ones).

The product of its digits is 420, while the sum is 20.

The square root of 213725 is about 462.3040125286. The cubic root of 213725 is about 59.7886079499.

The spelling of 213725 in words is "two hundred thirteen thousand, seven hundred twenty-five".