25181952 has 36 divisors (see below), whose sum is σ = 67022760. Its totient is φ = 8393728.

The previous prime is 25181939. The next prime is 25181953. The reversal of 25181952 is 25918152.

It is a super-4 number, since 4×25181952⁴ (a number of 31 digits) contains 4444 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25181953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15627 + ... + 17162.

Almost surely, 2^25181952 is an apocalyptic number.

It is an amenable number.

25181952 is an abundant number, since it is smaller than the sum of its proper divisors (41840808).

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

25181952 is an equidigital number, since it uses as much as digits as its factorization.

25181952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32808 (or 32794 counting only the distinct ones).

The product of its digits is 7200, while the sum is 33.

The square root of 25181952 is about 5018.1622134004. The cubic root of 25181952 is about 293.1094342854.

The spelling of 25181952 in words is "twenty-five million, one hundred eighty-one thousand, nine hundred fifty-two".