670221355525 has 12 divisors (see below), whose sum is σ = 859732222500. Its totient is φ = 517688218880.

The previous prime is 670221355519. The next prime is 670221355541. The reversal of 670221355525 is 525553122076.

It can be written as a sum of positive squares in 6 ways, for example, as 8579020129 + 661642335396 = 92623^2 + 813414^2 .

It is not a de Polignac number, because 670221355525 - 2¹³ = 670221347333 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, 462220900 + ... + 462222349.

It is an arithmetic number, because the mean of its divisors is an integer number (71644351875).

Almost surely, 2^670221355525 is an apocalyptic number.

It is an amenable number.

670221355525 is a deficient number, since it is larger than the sum of its proper divisors (189510866975).

670221355525 is a wasteful number, since it uses less digits than its factorization.

670221355525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924443288 (or 924443283 counting only the distinct ones).

The product of its (nonzero) digits is 630000, while the sum is 43.

The spelling of 670221355525 in words is "six hundred seventy billion, two hundred twenty-one million, three hundred fifty-five thousand, five hundred twenty-five".