25415552 has 64 divisors (see below), whose sum is σ = 53978400. Its totient is φ = 11894784.

The previous prime is 25415549. The next prime is 25415569. The reversal of 25415552 is 25551452.

It is a tau number, because it is divible by the number of its divisors (64).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261968 + ... + 262064.

Almost surely, 2^25415552 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 25415552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26989200).

25415552 is an abundant number, since it is smaller than the sum of its proper divisors (28562848).

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

25415552 is an equidigital number, since it uses as much as digits as its factorization.

25415552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 211 counting only the distinct ones).

The product of its digits is 10000, while the sum is 29.

The square root of 25415552 is about 5041.3839369760. The cubic root of 25415552 is about 294.0129878416.

The spelling of 25415552 in words is "twenty-five million, four hundred fifteen thousand, five hundred fifty-two".