28437408862325 has 6 divisors (see below), whose sum is σ = 35262386989314. Its totient is φ = 22749927089840.

The previous prime is 28437408862321. The next prime is 28437408862327. The reversal of 28437408862325 is 52326880473482.

It can be written as a sum of positive squares in 3 ways, for example, as 3874590686404 + 24562818175921 = 1968398^2 + 4956089^2 .

It is not a de Polignac number, because 28437408862325 - 2² = 28437408862321 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 (28437408862321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 568748177222 + ... + 568748177271.

It is an arithmetic number, because the mean of its divisors is an integer number (5877064498219).

Almost surely, 2^{28437408862325} is an apocalyptic number.

28437408862325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28437408862325 is a deficient number, since it is larger than the sum of its proper divisors (6824978126989).

28437408862325 is a wasteful number, since it uses less digits than its factorization.

28437408862325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137496354503 (or 1137496354498 counting only the distinct ones).

The product of its (nonzero) digits is 123863040, while the sum is 62.

The spelling of 28437408862325 in words is "twenty-eight trillion, four hundred thirty-seven billion, four hundred eight million, eight hundred sixty-two thousand, three hundred twenty-five".