25284416 has 14 divisors (see below), whose sum is σ = 50173890. Its totient is φ = 12642176.

The previous prime is 25284407. The next prime is 25284419. The reversal of 25284416 is 61448252.

It can be written as a sum of positive squares in only one way, i.e., 18524416 + 6760000 = 4304^2 + 2600^2 .

It is a super-2 number, since 2×25284416² = 1278603384922112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25284419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197471 + ... + 197598.

Almost surely, 2^25284416 is an apocalyptic number.

It is an amenable number.

25284416 is a deficient number, since it is larger than the sum of its proper divisors (24889474).

25284416 is an equidigital number, since it uses as much as digits as its factorization.

25284416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395081 (or 395071 counting only the distinct ones).

The product of its digits is 15360, while the sum is 32.

The square root of 25284416 is about 5028.3611644352. The cubic root of 25284416 is about 293.5064451084.

The spelling of 25284416 in words is "twenty-five million, two hundred eighty-four thousand, four hundred sixteen".