25536000 has 320 divisors, whose sum is σ = 102136320. Its totient is φ = 5529600.

The previous prime is 25535999. The next prime is 25536001. The reversal of 25536000 is 63552.

It is an interprime number because it is at equal distance from previous prime (25535999) and next prime (25536001).

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25536001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1343991 + ... + 1344009.

It is an arithmetic number, because the mean of its divisors is an integer number (319176).

Almost surely, 2^25536000 is an apocalyptic number.

25536000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25536000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51068160).

25536000 is an abundant number, since it is smaller than the sum of its proper divisors (76600320).

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

25536000 is an equidigital number, since it uses as much as digits as its factorization.

25536000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 25536000 is about 5053.3157431532. The cubic root of 25536000 is about 294.4767128382.

Adding to 25536000 its reverse (63552), we get a palindrome (25599552).

The spelling of 25536000 in words is "twenty-five million, five hundred thirty-six thousand".