25898401 has 2 divisors, whose sum is σ = 25898402. Its totient is φ = 25898400.

The previous prime is 25898393. The next prime is 25898417. The reversal of 25898401 is 10489852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21902400 + 3996001 = 4680^2 + 1999^2 .

It is a cyclic number.

It is not a de Polignac number, because 25898401 - 2³ = 25898393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25898441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12949200 + 12949201.

It is an arithmetic number, because the mean of its divisors is an integer number (12949201).

Almost surely, 2^25898401 is an apocalyptic number.

It is an amenable number.

25898401 is a deficient number, since it is larger than the sum of its proper divisors (1).

25898401 is an equidigital number, since it uses as much as digits as its factorization.

25898401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 25898401 is about 5089.0471603238. The cubic root of 25898401 is about 295.8632228126.

The spelling of 25898401 in words is "twenty-five million, eight hundred ninety-eight thousand, four hundred one".