814625001 has 6 divisors (see below), whose sum is σ = 1176680570. Its totient is φ = 543083328.

The previous prime is 814624991. The next prime is 814625027. The reversal of 814625001 is 100526418.

It can be written as a sum of positive squares in only one way, i.e., 671846400 + 142778601 = 25920^2 + 11949^2 .

It is not a de Polignac number, because 814625001 - 2⁵ = 814624969 is a prime.

It is a super-2 number, since 2×814625001² = 1327227784508500002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (814625501) 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 in 5 ways as a sum of consecutive naturals, for example, 45256936 + ... + 45256953.

Almost surely, 2^814625001 is an apocalyptic number.

It is an amenable number.

814625001 is a deficient number, since it is larger than the sum of its proper divisors (362055569).

814625001 is a wasteful number, since it uses less digits than its factorization.

814625001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90513895 (or 90513892 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 814625001 is about 28541.6362705434. The cubic root of 814625001 is about 933.9405774348.

The spelling of 814625001 in words is "eight hundred fourteen million, six hundred twenty-five thousand, one".