25899401 has 4 divisors (see below), whose sum is σ = 28253904. Its totient is φ = 23544900.

The previous prime is 25899389. The next prime is 25899427. The reversal of 25899401 is 10499852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25899401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25899481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1177235 + ... + 1177256.

It is an arithmetic number, because the mean of its divisors is an integer number (7063476).

Almost surely, 2^25899401 is an apocalyptic number.

It is an amenable number.

25899401 is a deficient number, since it is larger than the sum of its proper divisors (2354503).

25899401 is a wasteful number, since it uses less digits than its factorization.

25899401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2354502.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 25899401 is about 5089.1454095948. The cubic root of 25899401 is about 295.8670307622.

The spelling of 25899401 in words is "twenty-five million, eight hundred ninety-nine thousand, four hundred one".