168423625 has 8 divisors (see below), whose sum is σ = 210192840. Its totient is φ = 134738800.

The previous prime is 168423617. The next prime is 168423637. The reversal of 168423625 is 526324861.

It can be written as a sum of positive squares in 4 ways, for example, as 29560969 + 138862656 = 5437^2 + 11784^2 .

It is not a de Polignac number, because 168423625 - 2³ = 168423617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 673570 + ... + 673819.

It is an arithmetic number, because the mean of its divisors is an integer number (26274105).

Almost surely, 2^168423625 is an apocalyptic number.

It is an amenable number.

168423625 is a deficient number, since it is larger than the sum of its proper divisors (41769215).

168423625 is an equidigital number, since it uses as much as digits as its factorization.

168423625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347404 (or 1347394 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 168423625 is about 12977.8127972321. The cubic root of 168423625 is about 552.2482353811.

The spelling of 168423625 in words is "one hundred sixty-eight million, four hundred twenty-three thousand, six hundred twenty-five".