238725197251 has 2 divisors, whose sum is σ = 238725197252. Its totient is φ = 238725197250.

The previous prime is 238725197189. The next prime is 238725197261. The reversal of 238725197251 is 152791527832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238725197251 - 2⁹ = 238725196739 is a prime.

It is not a weakly prime, because it can be changed into another prime (238725197261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119362598625 + 119362598626.

It is an arithmetic number, because the mean of its divisors is an integer number (119362598626).

Almost surely, 2^238725197251 is an apocalyptic number.

238725197251 is a deficient number, since it is larger than the sum of its proper divisors (1).

238725197251 is an equidigital number, since it uses as much as digits as its factorization.

238725197251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2116800, while the sum is 52.

The spelling of 238725197251 in words is "two hundred thirty-eight billion, seven hundred twenty-five million, one hundred ninety-seven thousand, two hundred fifty-one".