38401225247557 has 2 divisors, whose sum is σ = 38401225247558. Its totient is φ = 38401225247556.

The previous prime is 38401225247503. The next prime is 38401225247563. The reversal of 38401225247557 is 75574252210483.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29372215908996 + 9029009338561 = 5419614^2 + 3004831^2 .

It is a cyclic number.

It is not a de Polignac number, because 38401225247557 - 2³⁹ = 37851469433669 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38401225247498 and 38401225247507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38401225241557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19200612623778 + 19200612623779.

It is an arithmetic number, because the mean of its divisors is an integer number (19200612623779).

Almost surely, 2^{38401225247557} is an apocalyptic number.

It is an amenable number.

38401225247557 is a deficient number, since it is larger than the sum of its proper divisors (1).

38401225247557 is an equidigital number, since it uses as much as digits as its factorization.

38401225247557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816000, while the sum is 55.

The spelling of 38401225247557 in words is "thirty-eight trillion, four hundred one billion, two hundred twenty-five million, two hundred forty-seven thousand, five hundred fifty-seven".