25835728 has 10 divisors (see below), whose sum is σ = 50056754. Its totient is φ = 12917856.

The previous prime is 25835707. The next prime is 25835729. The reversal of 25835728 is 82753852.

It can be written as a sum of positive squares in only one way, i.e., 17239104 + 8596624 = 4152^2 + 2932^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25835729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 807351 + ... + 807382.

Almost surely, 2^25835728 is an apocalyptic number.

It is an amenable number.

25835728 is a deficient number, since it is larger than the sum of its proper divisors (24221026).

25835728 is a wasteful number, since it uses less digits than its factorization.

25835728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1614741 (or 1614735 counting only the distinct ones).

The product of its digits is 134400, while the sum is 40.

The square root of 25835728 is about 5082.8857945069. The cubic root of 25835728 is about 295.6243713438.

The spelling of 25835728 in words is "twenty-five million, eight hundred thirty-five thousand, seven hundred twenty-eight".