25901389 has 12 divisors (see below), whose sum is σ = 27570684. Its totient is φ = 24328512.

The previous prime is 25901377. The next prime is 25901401. The reversal of 25901389 is 98310952.

It is an interprime number because it is at equal distance from previous prime (25901377) and next prime (25901401).

It can be written as a sum of positive squares in 2 ways, for example, as 15468489 + 10432900 = 3933^2 + 3230^2 .

It is not a de Polignac number, because 25901389 - 2⁷ = 25901261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25901339) 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 in 11 ways as a sum of consecutive naturals, for example, 56449 + ... + 56905.

It is an arithmetic number, because the mean of its divisors is an integer number (2297557).

Almost surely, 2^25901389 is an apocalyptic number.

It is an amenable number.

25901389 is a deficient number, since it is larger than the sum of its proper divisors (1669295).

25901389 is a wasteful number, since it uses less digits than its factorization.

25901389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 633 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 25901389 is about 5089.3407235122. The cubic root of 25901389 is about 295.8746006748.

The spelling of 25901389 in words is "twenty-five million, nine hundred one thousand, three hundred eighty-nine".