25275431 has 4 divisors (see below), whose sum is σ = 25338864. Its totient is φ = 25212000.

The previous prime is 25275427. The next prime is 25275451. The reversal of 25275431 is 13457252.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25275431 - 2² = 25275427 is a prime.

It is a super-2 number, since 2×25275431² = 1277694824471522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25275394 and 25275403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25275421) 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 3 ways as a sum of consecutive naturals, for example, 31115 + ... + 31916.

It is an arithmetic number, because the mean of its divisors is an integer number (6334716).

Almost surely, 2^25275431 is an apocalyptic number.

25275431 is a deficient number, since it is larger than the sum of its proper divisors (63433).

25275431 is an equidigital number, since it uses as much as digits as its factorization.

25275431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63432.

The product of its digits is 8400, while the sum is 29.

The square root of 25275431 is about 5027.4676528049. The cubic root of 25275431 is about 293.4716744438.

The spelling of 25275431 in words is "twenty-five million, two hundred seventy-five thousand, four hundred thirty-one".