25290231 has 8 divisors (see below), whose sum is σ = 33799920. Its totient is φ = 16820352.

The previous prime is 25290211. The next prime is 25290247. The reversal of 25290231 is 13209252.

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

It is not a de Polignac number, because 25290231 - 2¹⁰ = 25289207 is a prime.

It is a super-2 number, since 2×25290231² = 1279191568066722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25290211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8436 + ... + 11033.

It is an arithmetic number, because the mean of its divisors is an integer number (4224990).

Almost surely, 2^25290231 is an apocalyptic number.

25290231 is a deficient number, since it is larger than the sum of its proper divisors (8509689).

25290231 is a wasteful number, since it uses less digits than its factorization.

25290231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19905.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 25290231 is about 5028.9393513941. The cubic root of 25290231 is about 293.5289439361.

Adding to 25290231 its reverse (13209252), we get a palindrome (38499483).

The spelling of 25290231 in words is "twenty-five million, two hundred ninety thousand, two hundred thirty-one".