25241531 has 8 divisors (see below), whose sum is σ = 28887264. Its totient is φ = 21605760.

The previous prime is 25241521. The next prime is 25241537. The reversal of 25241531 is 13514252.

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 25241531 - 2⁶ = 25241467 is a prime.

It is a super-2 number, since 2×25241531² = 1274269774447922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25241497 and 25241506.

It is not an unprimeable number, because it can be changed into a prime (25241537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4121 + ... + 8213.

It is an arithmetic number, because the mean of its divisors is an integer number (3610908).

Almost surely, 2^25241531 is an apocalyptic number.

25241531 is a deficient number, since it is larger than the sum of its proper divisors (3645733).

25241531 is an equidigital number, since it uses as much as digits as its factorization.

25241531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4981.

The product of its digits is 1200, while the sum is 23.

The square root of 25241531 is about 5024.0950428908. The cubic root of 25241531 is about 293.3404120480.

Adding to 25241531 its reverse (13514252), we get a palindrome (38755783).

The spelling of 25241531 in words is "twenty-five million, two hundred forty-one thousand, five hundred thirty-one".