25436416 has 36 divisors (see below), whose sum is σ = 51566032. Its totient is φ = 12519936.

The previous prime is 25436381. The next prime is 25436419. The reversal of 25436416 is 61463452.

It is a super-2 number, since 2×25436416² = 1294022517850112, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (25436419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16411 + ... + 17893.

Almost surely, 2^25436416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25436416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25783016).

25436416 is an abundant number, since it is smaller than the sum of its proper divisors (26129616).

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

25436416 is an equidigital number, since it uses as much as digits as its factorization.

25436416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566 (or 1552 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 25436416 is about 5043.4527855429. The cubic root of 25436416 is about 294.0934190301.

Adding to 25436416 its reverse (61463452), we get a palindrome (86899868).

It can be divided in two parts, 25436 and 416, that added together give a palindrome (25852).

The spelling of 25436416 in words is "twenty-five million, four hundred thirty-six thousand, four hundred sixteen".