621252575 has 12 divisors (see below), whose sum is σ = 774010728. Its totient is φ = 494642400.

The previous prime is 621252509. The next prime is 621252581. The reversal of 621252575 is 575252126.

It is not a de Polignac number, because 621252575 - 2²⁰ = 620203999 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

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, 53612 + ... + 64161.

It is an arithmetic number, because the mean of its divisors is an integer number (64500894).

Almost surely, 2^621252575 is an apocalyptic number.

621252575 is a deficient number, since it is larger than the sum of its proper divisors (152758153).

621252575 is a wasteful number, since it uses less digits than its factorization.

621252575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117994 (or 117989 counting only the distinct ones).

The product of its digits is 42000, while the sum is 35.

The square root of 621252575 is about 24924.9388163743. The cubic root of 621252575 is about 853.2757448963.

The spelling of 621252575 in words is "six hundred twenty-one million, two hundred fifty-two thousand, five hundred seventy-five".