151825381 has 2 divisors, whose sum is σ = 151825382. Its totient is φ = 151825380.

The previous prime is 151825379. The next prime is 151825441. The reversal of 151825381 is 183528151.

151825381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133033156 + 18792225 = 11534^2 + 4335^2 .

It is an emirp because it is prime and its reverse (183528151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 151825381 - 2¹ = 151825379 is a prime.

It is a super-2 number, since 2×151825381² = 46101892631590322, which contains 22 as substring.

Together with 151825379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151825301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75912690 + 75912691.

It is an arithmetic number, because the mean of its divisors is an integer number (75912691).

Almost surely, 2^151825381 is an apocalyptic number.

It is an amenable number.

151825381 is a deficient number, since it is larger than the sum of its proper divisors (1).

151825381 is an equidigital number, since it uses as much as digits as its factorization.

151825381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 34.

The square root of 151825381 is about 12321.7442352940. The cubic root of 151825381 is about 533.4758858093.

The spelling of 151825381 in words is "one hundred fifty-one million, eight hundred twenty-five thousand, three hundred eighty-one".