25061920 has 48 divisors (see below), whose sum is σ = 63768600. Its totient is φ = 9252864.

The previous prime is 25061909. The next prime is 25061921. The reversal of 25061920 is 2916052.

It can be written as a sum of positive squares in 4 ways, for example, as 17943696 + 7118224 = 4236^2 + 2668^2 .

It is not an unprimeable number, because it can be changed into a prime (25061921) 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, 3945 + ... + 8104.

Almost surely, 2^25061920 is an apocalyptic number.

25061920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25061920 is an abundant number, since it is smaller than the sum of its proper divisors (38706680).

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

25061920 is a wasteful number, since it uses less digits than its factorization.

25061920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12077 (or 12069 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 25061920 is about 5006.1881706544. The cubic root of 25061920 is about 292.6429816940.

Adding to 25061920 its reverse (2916052), we get a palindrome (27977972).

The spelling of 25061920 in words is "twenty-five million, sixty-one thousand, nine hundred twenty".