25900257 has 8 divisors (see below), whose sum is σ = 35049376. Its totient is φ = 17008992.

The previous prime is 25900247. The next prime is 25900271. The reversal of 25900257 is 75200952.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25900257 - 2⁴ = 25900241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25900247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64228 + ... + 64629.

It is an arithmetic number, because the mean of its divisors is an integer number (4381172).

Almost surely, 2^25900257 is an apocalyptic number.

It is an amenable number.

25900257 is a deficient number, since it is larger than the sum of its proper divisors (9149119).

25900257 is a wasteful number, since it uses less digits than its factorization.

25900257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128927.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 25900257 is about 5089.2295094641. The cubic root of 25900257 is about 295.8702902892.

The spelling of 25900257 in words is "twenty-five million, nine hundred thousand, two hundred fifty-seven".