38401225241557 has 2 divisors, whose sum is σ = 38401225241558. Its totient is φ = 38401225241556.

The previous prime is 38401225241537. The next prime is 38401225241647. The reversal of 38401225241557 is 75514252210483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25030019006001 + 13371206235556 = 5003001^2 + 3656666^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38401225241557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38401225241557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38401225241507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19200612620778 + 19200612620779.

It is an arithmetic number, because the mean of its divisors is an integer number (19200612620779).

Almost surely, 2^{38401225241557} is an apocalyptic number.

It is an amenable number.

38401225241557 is a deficient number, since it is larger than the sum of its proper divisors (1).

38401225241557 is an equidigital number, since it uses as much as digits as its factorization.

38401225241557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688000, while the sum is 49.

The spelling of 38401225241557 in words is "thirty-eight trillion, four hundred one billion, two hundred twenty-five million, two hundred forty-one thousand, five hundred fifty-seven".