1553797913725 has 12 divisors (see below), whose sum is σ = 1948357836180. Its totient is φ = 1229071606400.

The previous prime is 1553797913711. The next prime is 1553797913791. The reversal of 1553797913725 is 5273197973551.

It can be written as a sum of positive squares in 6 ways, for example, as 483361438564 + 1070436475161 = 695242^2 + 1034619^2 .

It is not a de Polignac number, because 1553797913725 - 2⁷ = 1553797913597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349165846 + ... + 349170295.

It is an arithmetic number, because the mean of its divisors is an integer number (162363153015).

Almost surely, 2^{1553797913725} is an apocalyptic number.

It is an amenable number.

1553797913725 is a deficient number, since it is larger than the sum of its proper divisors (394559922455).

1553797913725 is an equidigital number, since it uses as much as digits as its factorization.

1553797913725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698336240 (or 698336235 counting only the distinct ones).

The product of its digits is 62511750, while the sum is 64.

The spelling of 1553797913725 in words is "one trillion, five hundred fifty-three billion, seven hundred ninety-seven million, nine hundred thirteen thousand, seven hundred twenty-five".