25229952 has 144 divisors (see below), whose sum is σ = 80242890. Its totient is φ = 7603200.

The previous prime is 25229951. The next prime is 25229957. The reversal of 25229952 is 25992252.

It can be written as a sum of positive squares in only one way, i.e., 25160256 + 69696 = 5016^2 + 264^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (25229951) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 139302 + ... + 139482.

Almost surely, 2^25229952 is an apocalyptic number.

25229952 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 25229952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40121445).

25229952 is an abundant number, since it is smaller than the sum of its proper divisors (55012938).

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

25229952 is a wasteful number, since it uses less digits than its factorization.

25229952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 197 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 25229952 is about 5022.9425638763. The cubic root of 25229952 is about 293.2955506892.

The spelling of 25229952 in words is "twenty-five million, two hundred twenty-nine thousand, nine hundred fifty-two".