151725881 has 2 divisors, whose sum is σ = 151725882. Its totient is φ = 151725880.

The previous prime is 151725877. The next prime is 151725907. The reversal of 151725881 is 188527151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151683856 + 42025 = 12316^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 151725881 - 2² = 151725877 is a prime.

It is a super-2 number, since 2×151725881² = 46041485930452322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (151725481) 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, 75862940 + 75862941.

It is an arithmetic number, because the mean of its divisors is an integer number (75862941).

Almost surely, 2^151725881 is an apocalyptic number.

It is an amenable number.

151725881 is a deficient number, since it is larger than the sum of its proper divisors (1).

151725881 is an equidigital number, since it uses as much as digits as its factorization.

151725881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22400, while the sum is 38.

The square root of 151725881 is about 12317.7059958419. The cubic root of 151725881 is about 533.3593210861.

The spelling of 151725881 in words is "one hundred fifty-one million, seven hundred twenty-five thousand, eight hundred eighty-one".