25132340 has 12 divisors (see below), whose sum is σ = 52777956. Its totient is φ = 10052928.

The previous prime is 25132321. The next prime is 25132369. The reversal of 25132340 is 4323152.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5400976 + 19731364 = 2324^2 + 4442^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1256617 = 25132340 / (2 + 5 + 1 + 3 + 2 + 3 + 4 + 0).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 628289 + ... + 628328.

It is an arithmetic number, because the mean of its divisors is an integer number (4398163).

Almost surely, 2^25132340 is an apocalyptic number.

25132340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25132340 is an abundant number, since it is smaller than the sum of its proper divisors (27645616).

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

25132340 is a wasteful number, since it uses less digits than its factorization.

25132340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256626 (or 1256624 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 25132340 is about 5013.2165323273. The cubic root of 25132340 is about 292.9168187502.

Adding to 25132340 its reverse (4323152), we get a palindrome (29455492).

The spelling of 25132340 in words is "twenty-five million, one hundred thirty-two thousand, three hundred forty".