653121620325 has 36 divisors (see below), whose sum is σ = 1169917227648. Its totient is φ = 348300612000.

The previous prime is 653121620309. The next prime is 653121620329. The reversal of 653121620325 is 523026121356.

653121620325 is a `hidden beast` number, since 6 + 5 + 3 + 1 + 2 + 1 + 620 + 3 + 25 = 666.

It is not a de Polignac number, because 653121620325 - 2⁴ = 653121620309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 653121620325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653121620329) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2533650 + ... + 2779500.

It is an arithmetic number, because the mean of its divisors is an integer number (32497700768).

Almost surely, 2^653121620325 is an apocalyptic number.

It is an amenable number.

653121620325 is a deficient number, since it is larger than the sum of its proper divisors (516795607323).

653121620325 is a wasteful number, since it uses less digits than its factorization.

653121620325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257674 (or 257666 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 653121620325 in words is "six hundred fifty-three billion, one hundred twenty-one million, six hundred twenty thousand, three hundred twenty-five".