621061725 has 24 divisors (see below), whose sum is σ = 1028272480. Its totient is φ = 330765120.

The previous prime is 621061723. The next prime is 621061741. The reversal of 621061725 is 527160126.

It is not a de Polignac number, because 621061725 - 2¹ = 621061723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 621061692 and 621061701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621061723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51306 + ... + 62244.

Almost surely, 2^621061725 is an apocalyptic number.

It is an amenable number.

621061725 is a deficient number, since it is larger than the sum of its proper divisors (407210755).

621061725 is a wasteful number, since it uses less digits than its factorization.

621061725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11709 (or 11704 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 621061725 is about 24921.1100274446. The cubic root of 621061725 is about 853.1883599577.

The spelling of 621061725 in words is "six hundred twenty-one million, sixty-one thousand, seven hundred twenty-five".