25231361 has 2 divisors, whose sum is σ = 25231362. Its totient is φ = 25231360.

The previous prime is 25231351. The next prime is 25231397. The reversal of 25231361 is 16313252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25000000 + 231361 = 5000^2 + 481^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25231361 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25231301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12615680 + 12615681.

It is an arithmetic number, because the mean of its divisors is an integer number (12615681).

It is a Proth number, since it is equal to 385 ⋅ 2¹⁶ + 1 and 385 < 2¹⁶.

Almost surely, 2^25231361 is an apocalyptic number.

It is an amenable number.

25231361 is a deficient number, since it is larger than the sum of its proper divisors (1).

25231361 is an equidigital number, since it uses as much as digits as its factorization.

25231361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 23.

The square root of 25231361 is about 5023.0828183497. The cubic root of 25231361 is about 293.3010104134.

It can be divided in two parts, 252 and 31361, that added together give a palindrome (31613).

The spelling of 25231361 in words is "twenty-five million, two hundred thirty-one thousand, three hundred sixty-one".