25489552 has 40 divisors (see below), whose sum is σ = 54184032. Its totient is φ = 11520000.

The previous prime is 25489537. The next prime is 25489567. The reversal of 25489552 is 25598452.

It is an interprime number because it is at equal distance from previous prime (25489537) and next prime (25489567).

It is a super-2 number, since 2×25489552² = 1299434522321408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43888 + ... + 44464.

Almost surely, 2^25489552 is an apocalyptic number.

25489552 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 25489552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27092016).

25489552 is an abundant number, since it is smaller than the sum of its proper divisors (28694480).

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

25489552 is a wasteful number, since it uses less digits than its factorization.

25489552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847 (or 841 counting only the distinct ones).

The product of its digits is 144000, while the sum is 40.

The square root of 25489552 is about 5048.7178570405. The cubic root of 25489552 is about 294.2980610559.

Subtracting 25489552 from its reverse (25598452), we obtain a square (108900 = 330²).

It can be divided in two parts, 2548 and 9552, that added together give a square (12100 = 110²).

The spelling of 25489552 in words is "twenty-five million, four hundred eighty-nine thousand, five hundred fifty-two".