25723128 has 32 divisors (see below), whose sum is σ = 64904400. Its totient is φ = 8494848.

The previous prime is 25723127. The next prime is 25723129. The reversal of 25723128 is 82132752.

It is an interprime number because it is at equal distance from previous prime (25723127) and next prime (25723129).

It is a junction number, because it is equal to n+sod(n) for n = 25723095 and 25723104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25723123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2301 + ... + 7532.

Almost surely, 2^25723128 is an apocalyptic number.

It is an amenable number.

25723128 is an abundant number, since it is smaller than the sum of its proper divisors (39181272).

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

25723128 is a wasteful number, since it uses less digits than its factorization.

25723128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9951 (or 9947 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 25723128 is about 5071.7973145622. The cubic root of 25723128 is about 295.1942721107.

The spelling of 25723128 in words is "twenty-five million, seven hundred twenty-three thousand, one hundred twenty-eight".