25281125 has 16 divisors (see below), whose sum is σ = 33409584. Its totient is φ = 19033600.

The previous prime is 25281121. The next prime is 25281149. The reversal of 25281125 is 52118252.

It can be written as a sum of positive squares in 8 ways, for example, as 261121 + 25020004 = 511^2 + 5002^2 .

It is not a de Polignac number, because 25281125 - 2² = 25281121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25281094 and 25281103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25281121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3824 + ... + 8073.

It is an arithmetic number, because the mean of its divisors is an integer number (2088099).

Almost surely, 2^25281125 is an apocalyptic number.

25281125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25281125 is a deficient number, since it is larger than the sum of its proper divisors (8128459).

25281125 is a wasteful number, since it uses less digits than its factorization.

25281125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11929 (or 11919 counting only the distinct ones).

The product of its digits is 1600, while the sum is 26.

The square root of 25281125 is about 5028.0339099891. The cubic root of 25281125 is about 293.4937103654.

Adding to 25281125 its reverse (52118252), we get a palindrome (77399377).

The spelling of 25281125 in words is "twenty-five million, two hundred eighty-one thousand, one hundred twenty-five".