25890120 has 48 divisors (see below), whose sum is σ = 84144060. Its totient is φ = 6903936.

The previous prime is 25890119. The next prime is 25890131. The reversal of 25890120 is 2109852.

It can be written as a sum of positive squares in 2 ways, for example, as 24980004 + 910116 = 4998^2 + 954^2 .

It is a super-2 number, since 2×25890120² = 1340596627228800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35599 + ... + 36318.

Almost surely, 2^25890120 is an apocalyptic number.

25890120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25890120 is an abundant number, since it is smaller than the sum of its proper divisors (58253940).

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

25890120 is a wasteful number, since it uses less digits than its factorization.

25890120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71934 (or 71927 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 25890120 is about 5088.2334852088. The cubic root of 25890120 is about 295.8316854148.

Adding to 25890120 its reverse (2109852), we get a palindrome (27999972).

The spelling of 25890120 in words is "twenty-five million, eight hundred ninety thousand, one hundred twenty".