25199952 has 20 divisors (see below), whose sum is σ = 65100000. Its totient is φ = 8399968.

The previous prime is 25199929. The next prime is 25199957. The reversal of 25199952 is 25999152.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25199957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262452 + ... + 262547.

It is an arithmetic number, because the mean of its divisors is an integer number (3255000).

Almost surely, 2^25199952 is an apocalyptic number.

It is an amenable number.

25199952 is an abundant number, since it is smaller than the sum of its proper divisors (39900048).

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

25199952 is a wasteful number, since it uses less digits than its factorization.

25199952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525010 (or 525004 counting only the distinct ones).

The product of its digits is 72900, while the sum is 42.

The square root of 25199952 is about 5019.9553782877. The cubic root of 25199952 is about 293.1792556299.

The spelling of 25199952 in words is "twenty-five million, one hundred ninety-nine thousand, nine hundred fifty-two".