1690253325 has 72 divisors (see below), whose sum is σ = 3276331968. Its totient is φ = 862202880.

The previous prime is 1690253311. The next prime is 1690253329. The reversal of 1690253325 is 5233520961.

1690253325 is a `hidden beast` number, since 16 + 90 + 2 + 533 + 25 = 666.

It is not a de Polignac number, because 1690253325 - 2⁸ = 1690253069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1690253325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1690253329) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 133677 + ... + 145773.

Almost surely, 2^1690253325 is an apocalyptic number.

1690253325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1690253325 is a deficient number, since it is larger than the sum of its proper divisors (1586078643).

1690253325 is a wasteful number, since it uses less digits than its factorization.

1690253325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12145 (or 12128 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 1690253325 is about 41112.6905589989. The cubic root of 1690253325 is about 1191.1979380300.

The spelling of 1690253325 in words is "one billion, six hundred ninety million, two hundred fifty-three thousand, three hundred twenty-five".