151665625 has 12 divisors (see below), whose sum is σ = 189573804. Its totient is φ = 121330000.

The previous prime is 151665607. The next prime is 151665629. The reversal of 151665625 is 526566151.

151665625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 96118416 + 55547209 = 9804^2 + 7453^2 .

It is not a de Polignac number, because 151665625 - 2⁷ = 151665497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151665629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21142 + ... + 27391.

It is an arithmetic number, because the mean of its divisors is an integer number (15797817).

Almost surely, 2^151665625 is an apocalyptic number.

It is an amenable number.

151665625 is a deficient number, since it is larger than the sum of its proper divisors (37908179).

151665625 is an frugal number, since it uses more digits than its factorization.

151665625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48558 (or 48538 counting only the distinct ones).

The product of its digits is 54000, while the sum is 37.

The square root of 151665625 is about 12315.2598429753. The cubic root of 151665625 is about 533.2887061183.

The spelling of 151665625 in words is "one hundred fifty-one million, six hundred sixty-five thousand, six hundred twenty-five".