155925251 has 2 divisors, whose sum is σ = 155925252. Its totient is φ = 155925250.

The previous prime is 155925247. The next prime is 155925277. The reversal of 155925251 is 152529551.

It is a weak prime.

It is an emirp because it is prime and its reverse (152529551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155925251 - 2² = 155925247 is a prime.

It is not a weakly prime, because it can be changed into another prime (155925221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77962625 + 77962626.

It is an arithmetic number, because the mean of its divisors is an integer number (77962626).

Almost surely, 2^155925251 is an apocalyptic number.

155925251 is a deficient number, since it is larger than the sum of its proper divisors (1).

155925251 is an equidigital number, since it uses as much as digits as its factorization.

155925251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22500, while the sum is 35.

The square root of 155925251 is about 12487.0032834143. The cubic root of 155925251 is about 538.2352667544.

The spelling of 155925251 in words is "one hundred fifty-five million, nine hundred twenty-five thousand, two hundred fifty-one".