25218752 has 56 divisors (see below), whose sum is σ = 57095136. Its totient is φ = 10948608.

The previous prime is 25218751. The next prime is 25218761. The reversal of 25218752 is 25781252.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25218751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13253 + ... + 15035.

It is an arithmetic number, because the mean of its divisors is an integer number (1019556).

Almost surely, 2^25218752 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 25218752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28547568).

25218752 is an abundant number, since it is smaller than the sum of its proper divisors (31876384).

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

25218752 is a wasteful number, since it uses less digits than its factorization.

25218752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825 (or 1815 counting only the distinct ones).

The product of its digits is 11200, while the sum is 32.

The square root of 25218752 is about 5021.8275557809. The cubic root of 25218752 is about 293.2521446565.

Subtracting 25218752 from its reverse (25781252), we obtain a square (562500 = 750²).

The spelling of 25218752 in words is "twenty-five million, two hundred eighteen thousand, seven hundred fifty-two".