25870120 has 48 divisors (see below), whose sum is σ = 60235380. Its totient is φ = 9999360.

The previous prime is 25870111. The next prime is 25870123. The reversal of 25870120 is 2107852.

It can be written as a sum of positive squares in 2 ways, for example, as 25220484 + 649636 = 5022^2 + 806^2 .

It is not an unprimeable number, because it can be changed into a prime (25870123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38104 + ... + 38776.

Almost surely, 2^25870120 is an apocalyptic number.

25870120 is a gapful number since it is divisible by the number (20) 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 25870120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30117690).

25870120 is an abundant number, since it is smaller than the sum of its proper divisors (34365260).

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

25870120 is a wasteful number, since it uses less digits than its factorization.

25870120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746 (or 711 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 25870120 is about 5086.2677868944. The cubic root of 25870120 is about 295.7554895804.

Adding to 25870120 its reverse (2107852), we get a palindrome (27977972).

The spelling of 25870120 in words is "twenty-five million, eight hundred seventy thousand, one hundred twenty".