25422013 has 2 divisors, whose sum is σ = 25422014. Its totient is φ = 25422012.

The previous prime is 25421999. The next prime is 25422029. The reversal of 25422013 is 31022452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16499844 + 8922169 = 4062^2 + 2987^2 .

It is a cyclic number.

It is not a de Polignac number, because 25422013 - 2¹³ = 25413821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25422053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12711006 + 12711007.

It is an arithmetic number, because the mean of its divisors is an integer number (12711007).

Almost surely, 2^25422013 is an apocalyptic number.

It is an amenable number.

25422013 is a deficient number, since it is larger than the sum of its proper divisors (1).

25422013 is an equidigital number, since it uses as much as digits as its factorization.

25422013 is an evil number, because the sum of its binary digits is even.

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

The square root of 25422013 is about 5042.0246925218. The cubic root of 25422013 is about 294.0378998451.

Adding to 25422013 its reverse (31022452), we get a palindrome (56444465).

The spelling of 25422013 in words is "twenty-five million, four hundred twenty-two thousand, thirteen".