25240231 has 8 divisors (see below), whose sum is σ = 26193024. Its totient is φ = 24296160.

The previous prime is 25240207. The next prime is 25240277. The reversal of 25240231 is 13204252.

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 25240231 - 2¹⁷ = 25109159 is a prime.

It is a super-2 number, since 2×25240231² = 1274138521866722, 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 = 25240199 and 25240208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25240331) 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, 4041 + ... + 8173.

It is an arithmetic number, because the mean of its divisors is an integer number (3274128).

Almost surely, 2^25240231 is an apocalyptic number.

25240231 is a deficient number, since it is larger than the sum of its proper divisors (952793).

25240231 is a wasteful number, since it uses less digits than its factorization.

25240231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4361.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 25240231 is about 5023.9656646916. The cubic root of 25240231 is about 293.3353760475.

Adding to 25240231 its reverse (13204252), we get a palindrome (38444483).

The spelling of 25240231 in words is "twenty-five million, two hundred forty thousand, two hundred thirty-one".