25440052 has 12 divisors (see below), whose sum is σ = 48567456. Its totient is φ = 11563640.

The previous prime is 25440043. The next prime is 25440061. The reversal of 25440052 is 25004452.

It is an interprime number because it is at equal distance from previous prime (25440043) and next prime (25440061).

It is a Harshad number since it is a multiple of its sum of digits (22).

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 3 ways as a sum of consecutive naturals, for example, 289048 + ... + 289135.

It is an arithmetic number, because the mean of its divisors is an integer number (4047288).

Almost surely, 2^25440052 is an apocalyptic number.

25440052 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25440052 is a deficient number, since it is larger than the sum of its proper divisors (23127404).

25440052 is a wasteful number, since it uses less digits than its factorization.

25440052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578198 (or 578196 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 25440052 is about 5043.8132400001. The cubic root of 25440052 is about 294.1074313911.

Subtracting from 25440052 its reverse (25004452), we obtain a square (435600 = 660²).

It can be divided in two parts, 254400 and 52, that added together give a palindrome (254452).

The spelling of 25440052 in words is "twenty-five million, four hundred forty thousand, fifty-two".