420255253 has 4 divisors (see below), whose sum is σ = 458460288. Its totient is φ = 382050220.

The previous prime is 420255223. The next prime is 420255257. The reversal of 420255253 is 352552024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420255253 - 2⁹ = 420254741 is a prime.

It is a super-2 number, since 2×420255253² = 353228955348188018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420255257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19102501 + ... + 19102522.

It is an arithmetic number, because the mean of its divisors is an integer number (114615072).

Almost surely, 2^420255253 is an apocalyptic number.

It is an amenable number.

420255253 is a deficient number, since it is larger than the sum of its proper divisors (38205035).

420255253 is a wasteful number, since it uses less digits than its factorization.

420255253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38205034.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 420255253 is about 20500.1281215509. The cubic root of 420255253 is about 749.0389188828.

It can be divided in two parts, 42025 and 5253, that added together give a triangular number (47278 = T₃₀₇).

The spelling of 420255253 in words is "four hundred twenty million, two hundred fifty-five thousand, two hundred fifty-three".