25928424 has 40 divisors (see below), whose sum is σ = 72625410. Its totient is φ = 8642592.

The previous prime is 25928401. The next prime is 25928479. The reversal of 25928424 is 42482952.

It can be written as a sum of positive squares in only one way, i.e., 22752900 + 3175524 = 4770^2 + 1782^2 .

It is a super-2 number, since 2×25928424² = 1344566342247552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 19359 + ... + 20654.

Almost surely, 2^25928424 is an apocalyptic number.

25928424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25928424 is an abundant number, since it is smaller than the sum of its proper divisors (46696986).

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

25928424 is a wasteful number, since it uses less digits than its factorization.

25928424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40031 (or 40018 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 25928424 is about 5091.9960722687. The cubic root of 25928424 is about 295.9775062040.

The spelling of 25928424 in words is "twenty-five million, nine hundred twenty-eight thousand, four hundred twenty-four".