25628497 has 2 divisors, whose sum is σ = 25628498. Its totient is φ = 25628496.

The previous prime is 25628483. The next prime is 25628501. The reversal of 25628497 is 79482652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23580736 + 2047761 = 4856^2 + 1431^2 .

It is a cyclic number.

It is not a de Polignac number, because 25628497 - 2¹¹ = 25626449 is a prime.

It is not a weakly prime, because it can be changed into another prime (25628797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12814248 + 12814249.

It is an arithmetic number, because the mean of its divisors is an integer number (12814249).

Almost surely, 2^25628497 is an apocalyptic number.

It is an amenable number.

25628497 is a deficient number, since it is larger than the sum of its proper divisors (1).

25628497 is an equidigital number, since it uses as much as digits as its factorization.

25628497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 43.

The square root of 25628497 is about 5062.4595800856. The cubic root of 25628497 is about 294.8318375110.

The spelling of 25628497 in words is "twenty-five million, six hundred twenty-eight thousand, four hundred ninety-seven".