25855571401 has 8 divisors (see below), whose sum is σ = 28307908224. Its totient is φ = 23420206320.

The previous prime is 25855571389. The next prime is 25855571429. The reversal of 25855571401 is 10417555852.

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 25855571401 - 2¹⁷ = 25855440329 is a prime.

It is a super-4 number, since 4×25855571401⁴ (a number of 43 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25855571461) 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, 4239745 + ... + 4245838.

It is an arithmetic number, because the mean of its divisors is an integer number (3538488528).

Almost surely, 2^25855571401 is an apocalyptic number.

It is an amenable number.

25855571401 is a deficient number, since it is larger than the sum of its proper divisors (2452336823).

25855571401 is a wasteful number, since it uses less digits than its factorization.

25855571401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8485871.

The product of its (nonzero) digits is 280000, while the sum is 43.

The spelling of 25855571401 in words is "twenty-five billion, eight hundred fifty-five million, five hundred seventy-one thousand, four hundred one".