671154625 has 16 divisors (see below), whose sum is σ = 858036816. Its totient is φ = 523824000.

The previous prime is 671154599. The next prime is 671154629. The reversal of 671154625 is 526451176.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 542377521 + 128777104 = 23289^2 + 11348^2 .

It is not a de Polignac number, because 671154625 - 2¹³ = 671146433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671154629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60354 + ... + 70603.

It is an arithmetic number, because the mean of its divisors is an integer number (53627301).

Almost surely, 2^671154625 is an apocalyptic number.

It is an amenable number.

671154625 is a deficient number, since it is larger than the sum of its proper divisors (186882191).

671154625 is a wasteful number, since it uses less digits than its factorization.

671154625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131013 (or 131003 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 671154625 is about 25906.6521380127. The cubic root of 671154625 is about 875.5363786135.

The spelling of 671154625 in words is "six hundred seventy-one million, one hundred fifty-four thousand, six hundred twenty-five".