1670490225 has 18 divisors (see below), whose sum is σ = 2992034006. Its totient is φ = 890928000.

The previous prime is 1670490197. The next prime is 1670490257. The reversal of 1670490225 is 5220940761.

1670490225 is a `hidden beast` number, since 167 + 0 + 490 + 2 + 2 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 563397696 + 1107092529 = 23736^2 + 33273^2 .

It is not a de Polignac number, because 1670490225 - 2²² = 1666295921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1670490225.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3711976 + ... + 3712425.

Almost surely, 2^1670490225 is an apocalyptic number.

1670490225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1670490225 is a deficient number, since it is larger than the sum of its proper divisors (1321543781).

1670490225 is a wasteful number, since it uses less digits than its factorization.

1670490225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7424417 (or 7424409 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1670490225 is about 40871.6310538251. The cubic root of 1670490225 is about 1186.5370749767.

It can be divided in two parts, 16704 and 90225, that added together give a square (106929 = 327²).

The spelling of 1670490225 in words is "one billion, six hundred seventy million, four hundred ninety thousand, two hundred twenty-five".