420525205 has 8 divisors (see below), whose sum is σ = 507652992. Its totient is φ = 334405008.

The previous prime is 420525197. The next prime is 420525241. The reversal of 420525205 is 502525024.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420525205 - 2³ = 420525197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420525205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250977 + ... + 252646.

It is an arithmetic number, because the mean of its divisors is an integer number (63456624).

Almost surely, 2^420525205 is an apocalyptic number.

It is an amenable number.

420525205 is a deficient number, since it is larger than the sum of its proper divisors (87127787).

420525205 is a wasteful number, since it uses less digits than its factorization.

420525205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503795.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 420525205 is about 20506.7112185255. The cubic root of 420525205 is about 749.1992668877.

It can be divided in two parts, 4205 and 25205, that multiplied together give a square (105987025 = 10295²).

The spelling of 420525205 in words is "four hundred twenty million, five hundred twenty-five thousand, two hundred five".