25457401 has 2 divisors, whose sum is σ = 25457402. Its totient is φ = 25457400.

The previous prime is 25457371. The next prime is 25457407. The reversal of 25457401 is 10475452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20259001 + 5198400 = 4501^2 + 2280^2 .

It is a cyclic number.

It is not a de Polignac number, because 25457401 - 2⁹ = 25456889 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25457401.

It is not a weakly prime, because it can be changed into another prime (25457407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12728700 + 12728701.

It is an arithmetic number, because the mean of its divisors is an integer number (12728701).

Almost surely, 2^25457401 is an apocalyptic number.

It is an amenable number.

25457401 is a deficient number, since it is larger than the sum of its proper divisors (1).

25457401 is an equidigital number, since it uses as much as digits as its factorization.

25457401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 25457401 is about 5045.5327766253. The cubic root of 25457401 is about 294.1742723234.

The spelling of 25457401 in words is "twenty-five million, four hundred fifty-seven thousand, four hundred one".