25231433 has 4 divisors (see below), whose sum is σ = 25768320. Its totient is φ = 24694548.

The previous prime is 25231403. The next prime is 25231477. The reversal of 25231433 is 33413252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25231433 - 2¹⁴ = 25215049 is a prime.

It is a super-2 number, since 2×25231433² = 1273250422466978, 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 = 25231399 and 25231408.

It is not an unprimeable number, because it can be changed into a prime (25231403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268373 + ... + 268466.

It is an arithmetic number, because the mean of its divisors is an integer number (6442080).

Almost surely, 2^25231433 is an apocalyptic number.

It is an amenable number.

25231433 is a deficient number, since it is larger than the sum of its proper divisors (536887).

25231433 is an equidigital number, since it uses as much as digits as its factorization.

25231433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536886.

The product of its digits is 2160, while the sum is 23.

The square root of 25231433 is about 5023.0899852581. The cubic root of 25231433 is about 293.3012894002.

Adding to 25231433 its reverse (33413252), we get a palindrome (58644685).

The spelling of 25231433 in words is "twenty-five million, two hundred thirty-one thousand, four hundred thirty-three".