25951552 has 56 divisors (see below), whose sum is σ = 56765952. Its totient is φ = 11673600.

The previous prime is 25951547. The next prime is 25951577. The reversal of 25951552 is 25515952.

It is a happy number.

25951552 is nontrivially palindromic in base 7.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134368 + ... + 134560.

Almost surely, 2^25951552 is an apocalyptic number.

25951552 is a gapful number since it is divisible by the number (22) 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 25951552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28382976).

25951552 is an abundant number, since it is smaller than the sum of its proper divisors (30814400).

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

25951552 is a wasteful number, since it uses less digits than its factorization.

25951552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407 (or 397 counting only the distinct ones).

The product of its digits is 22500, while the sum is 34.

The square root of 25951552 is about 5094.2665811675. The cubic root of 25951552 is about 296.0654834425.

Subtracting from 25951552 its reverse (25515952), we obtain a square (435600 = 660²).

The spelling of 25951552 in words is "twenty-five million, nine hundred fifty-one thousand, five hundred fifty-two".