25402231 has 8 divisors (see below), whose sum is σ = 26838720. Its totient is φ = 24003168.

The previous prime is 25402229. The next prime is 25402241. The reversal of 25402231 is 13220452.

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 25402231 - 2¹ = 25402229 is a prime.

It is a super-2 number, since 2×25402231² = 1290546679554722, 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 = 25402199 and 25402208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25402241) 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, 7956 + ... + 10681.

It is an arithmetic number, because the mean of its divisors is an integer number (3354840).

Almost surely, 2^25402231 is an apocalyptic number.

25402231 is a deficient number, since it is larger than the sum of its proper divisors (1436489).

25402231 is a wasteful number, since it uses less digits than its factorization.

25402231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18713.

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

The square root of 25402231 is about 5040.0625988176. The cubic root of 25402231 is about 293.9616120610.

Adding to 25402231 its reverse (13220452), we get a palindrome (38622683).

The spelling of 25402231 in words is "twenty-five million, four hundred two thousand, two hundred thirty-one".