25885521901 has 8 divisors (see below), whose sum is σ = 25989173504. Its totient is φ = 25781930640.

The previous prime is 25885521859. The next prime is 25885521911. The reversal of 25885521901 is 10912558852.

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

It is a cyclic number.

It is not a de Polignac number, because 25885521901 - 2⁷ = 25885521773 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 (25885521911) 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, 972496 + ... + 998758.

It is an arithmetic number, because the mean of its divisors is an integer number (3248646688).

Almost surely, 2^25885521901 is an apocalyptic number.

It is an amenable number.

25885521901 is a deficient number, since it is larger than the sum of its proper divisors (103651603).

25885521901 is a wasteful number, since it uses less digits than its factorization.

25885521901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30171.

The product of its (nonzero) digits is 288000, while the sum is 46.

The spelling of 25885521901 in words is "twenty-five billion, eight hundred eighty-five million, five hundred twenty-one thousand, nine hundred one".