1657341232425 has 18 divisors (see below), whose sum is σ = 2968482296702. Its totient is φ = 883915323840.

The previous prime is 1657341232403. The next prime is 1657341232451. The reversal of 1657341232425 is 5242321437561.

1657341232425 is a `hidden beast` number, since 1 + 6 + 57 + 341 + 232 + 4 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 2084013801 + 1655257218624 = 45651^2 + 1286568^2 .

It is not a de Polignac number, because 1657341232425 - 2²⁴ = 1657324455209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3682980292 + ... + 3682980741.

Almost surely, 2^{1657341232425} is an apocalyptic number.

1657341232425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1657341232425 is a deficient number, since it is larger than the sum of its proper divisors (1311141064277).

1657341232425 is a wasteful number, since it uses less digits than its factorization.

1657341232425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7365961049 (or 7365961041 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 45.

Adding to 1657341232425 its reverse (5242321437561), we get a palindrome (6899662669986).

The spelling of 1657341232425 in words is "one trillion, six hundred fifty-seven billion, three hundred forty-one million, two hundred thirty-two thousand, four hundred twenty-five".