25512536 has 48 divisors (see below), whose sum is σ = 57182400. Its totient is φ = 10632384.

The previous prime is 25512523. The next prime is 25512559. The reversal of 25512536 is 63521552.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25512499 and 25512508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13625 + ... + 15383.

It is an arithmetic number, because the mean of its divisors is an integer number (1191300).

Almost surely, 2^25512536 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 25512536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28591200).

25512536 is an abundant number, since it is smaller than the sum of its proper divisors (31669864).

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

25512536 is a wasteful number, since it uses less digits than its factorization.

25512536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816 (or 1805 counting only the distinct ones).

The product of its digits is 9000, while the sum is 29.

The square root of 25512536 is about 5050.9935656265. The cubic root of 25512536 is about 294.3864909424.

The spelling of 25512536 in words is "twenty-five million, five hundred twelve thousand, five hundred thirty-six".