162625521 has 4 divisors (see below), whose sum is σ = 216834032. Its totient is φ = 108417012.

The previous prime is 162625513. The next prime is 162625523. The reversal of 162625521 is 125526261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 162625521 - 2³ = 162625513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162625523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27104251 + ... + 27104256.

It is an arithmetic number, because the mean of its divisors is an integer number (54208508).

Almost surely, 2^162625521 is an apocalyptic number.

It is an amenable number.

162625521 is a deficient number, since it is larger than the sum of its proper divisors (54208511).

162625521 is an equidigital number, since it uses as much as digits as its factorization.

162625521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54208510.

The product of its digits is 7200, while the sum is 30.

The square root of 162625521 is about 12752.4711722866. The cubic root of 162625521 is about 545.8369107290.

The spelling of 162625521 in words is "one hundred sixty-two million, six hundred twenty-five thousand, five hundred twenty-one".