25901899321 has 16 divisors (see below), whose sum is σ = 28083015360. Its totient is φ = 23806405440.

The previous prime is 25901899291. The next prime is 25901899339. The reversal of 25901899321 is 12399810952.

It is a cyclic number.

It is not a de Polignac number, because 25901899321 - 2⁹ = 25901898809 is a prime.

It is a super-2 number, since 2×25901899321² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25901899921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190851 + ... + 297031.

It is an arithmetic number, because the mean of its divisors is an integer number (1755188460).

Almost surely, 2^25901899321 is an apocalyptic number.

It is an amenable number.

25901899321 is a deficient number, since it is larger than the sum of its proper divisors (2181116039).

25901899321 is a wasteful number, since it uses less digits than its factorization.

25901899321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106584.

The product of its (nonzero) digits is 349920, while the sum is 49.

The spelling of 25901899321 in words is "twenty-five billion, nine hundred one million, eight hundred ninety-nine thousand, three hundred twenty-one".