25155312 has 120 divisors (see below), whose sum is σ = 80601984. Its totient is φ = 6619392.

The previous prime is 25155311. The next prime is 25155323. The reversal of 25155312 is 21355152.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25155311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56563 + ... + 57005.

Almost surely, 2^25155312 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 25155312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40300992).

25155312 is an abundant number, since it is smaller than the sum of its proper divisors (55446672).

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

25155312 is a wasteful number, since it uses less digits than its factorization.

25155312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487 (or 468 counting only the distinct ones).

The product of its digits is 1500, while the sum is 24.

The square root of 25155312 is about 5015.5071528211. The cubic root of 25155312 is about 293.0060376085.

The spelling of 25155312 in words is "twenty-five million, one hundred fifty-five thousand, three hundred twelve".