25723220 has 24 divisors (see below), whose sum is σ = 54547584. Its totient is φ = 10188576.

The previous prime is 25723219. The next prime is 25723253. The reversal of 25723220 is 2232752.

25723220 is an esthetic number in base 3, because in such base its adjacent digits differ by 1.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4184 + ... + 8303.

It is an arithmetic number, because the mean of its divisors is an integer number (2272816).

Almost surely, 2^25723220 is an apocalyptic number.

25723220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25723220 is an abundant number, since it is smaller than the sum of its proper divisors (28824364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25723220 is a wasteful number, since it uses less digits than its factorization.

25723220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12599 (or 12597 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 25723220 is about 5071.8063843171. The cubic root of 25723220 is about 295.1946240358.

Adding to 25723220 its reverse (2232752), we get a palindrome (27955972).

The spelling of 25723220 in words is "twenty-five million, seven hundred twenty-three thousand, two hundred twenty".