25313431 has 16 divisors (see below), whose sum is σ = 29907360. Its totient is φ = 21121920.

The previous prime is 25313371. The next prime is 25313437. The reversal of 25313431 is 13431352.

It is a cyclic number.

It is not a de Polignac number, because 25313431 - 2⁹ = 25312919 is a prime.

It is a super-2 number, since 2×25313431² = 1281539577983522, 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 (25313437) 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, 32361 + ... + 33133.

It is an arithmetic number, because the mean of its divisors is an integer number (1869210).

Almost surely, 2^25313431 is an apocalyptic number.

25313431 is a deficient number, since it is larger than the sum of its proper divisors (4593929).

25313431 is a wasteful number, since it uses less digits than its factorization.

25313431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026.

The product of its digits is 1080, while the sum is 22.

The square root of 25313431 is about 5031.2454720477. The cubic root of 25313431 is about 293.6186727885.

Adding to 25313431 its reverse (13431352), we get a palindrome (38744783).

The spelling of 25313431 in words is "twenty-five million, three hundred thirteen thousand, four hundred thirty-one".