1612258725 has 48 divisors (see below), whose sum is σ = 3323358720. Its totient is φ = 670027200.

The previous prime is 1612258717. The next prime is 1612258729. The reversal of 1612258725 is 5278522161.

It is not a de Polignac number, because 1612258725 - 2³ = 1612258717 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1612258729) 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 47 ways as a sum of consecutive naturals, for example, 133815 + ... + 145364.

It is an arithmetic number, because the mean of its divisors is an integer number (69236640).

Almost surely, 2^1612258725 is an apocalyptic number.

1612258725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1612258725 is an abundant number, since it is smaller than the sum of its proper divisors (1711099995).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1612258725 is a wasteful number, since it uses less digits than its factorization.

1612258725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279210 (or 279205 counting only the distinct ones).

The product of its digits is 67200, while the sum is 39.

The square root of 1612258725 is about 40152.9416730580. The cubic root of 1612258725 is about 1172.5865597130.

It can be divided in two parts, 16122 and 58725, that added together give a palindrome (74847).

The spelling of 1612258725 in words is "one billion, six hundred twelve million, two hundred fifty-eight thousand, seven hundred twenty-five".