202052405 has 4 divisors (see below), whose sum is σ = 242462892. Its totient is φ = 161641920.

The previous prime is 202052381. The next prime is 202052413. The reversal of 202052405 is 504250202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60109009 + 141943396 = 7753^2 + 11914^2 .

It is not a de Polignac number, because 202052405 - 2¹⁸ = 201790261 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 20205236 + ... + 20205245.

It is an arithmetic number, because the mean of its divisors is an integer number (60615723).

Almost surely, 2^202052405 is an apocalyptic number.

It is an amenable number.

202052405 is a deficient number, since it is larger than the sum of its proper divisors (40410487).

202052405 is an equidigital number, since it uses as much as digits as its factorization.

202052405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40410486.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 202052405 is about 14214.5138854623. The cubic root of 202052405 is about 586.7971664681.

The spelling of 202052405 in words is "two hundred two million, fifty-two thousand, four hundred five".