25725 has 24 divisors (see below), whose sum is σ = 49600. Its totient is φ = 11760.

The previous prime is 25717. The next prime is 25733. The reversal of 25725 is 52752.

It is an interprime number because it is at equal distance from previous prime (25717) and next prime (25733).

It is not a de Polignac number, because 25725 - 2³ = 25717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3672 + ... + 3678.

25725 is a Friedman number, since it can be written as 525*7^2, using all its digits and the basic arithmetic operations.

2²⁵⁷²⁵ is an apocalyptic number.

25725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25725 is a deficient number, since it is larger than the sum of its proper divisors (23875).

25725 is an equidigital number, since it uses as much as digits as its factorization.

25725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34 (or 15 counting only the distinct ones).

The product of its digits is 700, while the sum is 21.

The square root of 25725 is about 160.3901493235. The cubic root of 25725 is about 29.5201432856.

Multiplying 25725 by its sum of digits (21), we get a square (540225 = 735²).

25725 divided by its sum of digits (21) gives a triangular number (1225 = T₄₉).

It can be divided in two parts, 257 and 25, that added together give a palindrome (282).

The spelling of 25725 in words is "twenty-five thousand, seven hundred twenty-five".