25315237 has 8 divisors (see below), whose sum is σ = 25811136. Its totient is φ = 24824352.

The previous prime is 25315229. The next prime is 25315253. The reversal of 25315237 is 73251352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25315237 - 2³ = 25315229 is a prime.

It is a super-2 number, since 2×25315237² = 1281722448732338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25315337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9873 + ... + 12169.

It is an arithmetic number, because the mean of its divisors is an integer number (3226392).

Almost surely, 2^25315237 is an apocalyptic number.

It is an amenable number.

25315237 is a deficient number, since it is larger than the sum of its proper divisors (495899).

25315237 is a wasteful number, since it uses less digits than its factorization.

25315237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2507.

The product of its digits is 6300, while the sum is 28.

The square root of 25315237 is about 5031.4249472689. The cubic root of 25315237 is about 293.6256554151.

Adding to 25315237 its reverse (73251352), we get a palindrome (98566589).

It can be divided in two parts, 25315 and 237, that added together give a palindrome (25552).

The spelling of 25315237 in words is "twenty-five million, three hundred fifteen thousand, two hundred thirty-seven".