25633240231 has 8 divisors (see below), whose sum is σ = 25704746640. Its totient is φ = 25561777728.

The previous prime is 25633240229. The next prime is 25633240247. The reversal of 25633240231 is 13204233652.

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 25633240231 - 2¹ = 25633240229 is a prime.

It is a super-2 number, since 2×25633240231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25633240193 and 25633240202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25633240211) 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, 1408965 + ... + 1427041.

It is an arithmetic number, because the mean of its divisors is an integer number (3213093330).

Almost surely, 2^25633240231 is an apocalyptic number.

25633240231 is a deficient number, since it is larger than the sum of its proper divisors (71506409).

25633240231 is a wasteful number, since it uses less digits than its factorization.

25633240231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21953.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 25633240231 its reverse (13204233652), we get a palindrome (38837473883).

The spelling of 25633240231 in words is "twenty-five billion, six hundred thirty-three million, two hundred forty thousand, two hundred thirty-one".