25203140 has 12 divisors (see below), whose sum is σ = 52926636. Its totient is φ = 10081248.

The previous prime is 25203127. The next prime is 25203169. The reversal of 25203140 is 4130252.

It can be written as a sum of positive squares in 2 ways, for example, as 16711744 + 8491396 = 4088^2 + 2914^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 630059 + ... + 630098.

It is an arithmetic number, because the mean of its divisors is an integer number (4410553).

Almost surely, 2^25203140 is an apocalyptic number.

25203140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25203140 is an abundant number, since it is smaller than the sum of its proper divisors (27723496).

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

25203140 is a wasteful number, since it uses less digits than its factorization.

25203140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260166 (or 1260164 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 25203140 is about 5020.2729009487. The cubic root of 25203140 is about 293.1916182996.

Adding to 25203140 its reverse (4130252), we get a palindrome (29333392).

The spelling of 25203140 in words is "twenty-five million, two hundred three thousand, one hundred forty".