825516201 has 4 divisors (see below), whose sum is σ = 1100688272. Its totient is φ = 550344132.

The previous prime is 825516169. The next prime is 825516217. The reversal of 825516201 is 102615528.

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 825516201 - 2⁵ = 825516169 is a prime.

It is a super-2 number, since 2×825516201² = 1362953996226944802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (825516401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137586031 + ... + 137586036.

It is an arithmetic number, because the mean of its divisors is an integer number (275172068).

Almost surely, 2^825516201 is an apocalyptic number.

It is an amenable number.

825516201 is a deficient number, since it is larger than the sum of its proper divisors (275172071).

825516201 is a wasteful number, since it uses less digits than its factorization.

825516201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275172070.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 825516201 is about 28731.7977335217. The cubic root of 825516201 is about 938.0842986569.

The spelling of 825516201 in words is "eight hundred twenty-five million, five hundred sixteen thousand, two hundred one".