1721620125532 has 12 divisors (see below), whose sum is σ = 3016979427280. Its totient is φ = 859626003456.

The previous prime is 1721620125527. The next prime is 1721620125541. The reversal of 1721620125532 is 2355210261271.

It is a junction number, because it is equal to n+sod(n) for n = 1721620125491 and 1721620125500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296011557 + ... + 296017372.

Almost surely, 2^{1721620125532} is an apocalyptic number.

It is an amenable number.

1721620125532 is a deficient number, since it is larger than the sum of its proper divisors (1295359301748).

1721620125532 is a wasteful number, since it uses less digits than its factorization.

1721620125532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592029660 (or 592029658 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 1721620125532 in words is "one trillion, seven hundred twenty-one billion, six hundred twenty million, one hundred twenty-five thousand, five hundred thirty-two".