22725397 has 2 divisors, whose sum is σ = 22725398. Its totient is φ = 22725396.

The previous prime is 22725383. The next prime is 22725401. The reversal of 22725397 is 79352722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18887716 + 3837681 = 4346^2 + 1959^2 .

It is a cyclic number.

It is not a de Polignac number, because 22725397 - 2¹⁵ = 22692629 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22725097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11362698 + 11362699.

It is an arithmetic number, because the mean of its divisors is an integer number (11362699).

Almost surely, 2^22725397 is an apocalyptic number.

It is an amenable number.

22725397 is a deficient number, since it is larger than the sum of its proper divisors (1).

22725397 is an equidigital number, since it uses as much as digits as its factorization.

22725397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 37.

The square root of 22725397 is about 4767.1162142327. The cubic root of 22725397 is about 283.2503746359.

The spelling of 22725397 in words is "twenty-two million, seven hundred twenty-five thousand, three hundred ninety-seven".