25422637 has 2 divisors, whose sum is σ = 25422638. Its totient is φ = 25422636.

The previous prime is 25422623. The next prime is 25422641. The reversal of 25422637 is 73622452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22553001 + 2869636 = 4749^2 + 1694^2 .

It is a cyclic number.

It is not a de Polignac number, because 25422637 - 2¹⁵ = 25389869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25422599 and 25422608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25482637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12711318 + 12711319.

It is an arithmetic number, because the mean of its divisors is an integer number (12711319).

Almost surely, 2^25422637 is an apocalyptic number.

It is an amenable number.

25422637 is a deficient number, since it is larger than the sum of its proper divisors (1).

25422637 is an equidigital number, since it uses as much as digits as its factorization.

25422637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 31.

The square root of 25422637 is about 5042.0865720453. The cubic root of 25422637 is about 294.0403056099.

The spelling of 25422637 in words is "twenty-five million, four hundred twenty-two thousand, six hundred thirty-seven".