28025591377 has 8 divisors (see below), whose sum is σ = 32774113856. Its totient is φ = 23463285552.

The previous prime is 28025591351. The next prime is 28025591381. The reversal of 28025591377 is 77319552082.

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

It is not a de Polignac number, because 28025591377 - 2⁷ = 28025591249 is a prime.

It is a super-2 number, since 2×28025591377² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28025591377.

It is not an unprimeable number, because it can be changed into a prime (28025597377) 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, 46553838 + ... + 46554439.

It is an arithmetic number, because the mean of its divisors is an integer number (4096764232).

Almost surely, 2^28025591377 is an apocalyptic number.

It is an amenable number.

28025591377 is a deficient number, since it is larger than the sum of its proper divisors (4748522479).

28025591377 is an equidigital number, since it uses as much as digits as its factorization.

28025591377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93108327.

The product of its (nonzero) digits is 1058400, while the sum is 49.

The spelling of 28025591377 in words is "twenty-eight billion, twenty-five million, five hundred ninety-one thousand, three hundred seventy-seven".