402025310053221 has 4 divisors (see below), whose sum is σ = 536033746737632. Its totient is φ = 268016873368812.

The previous prime is 402025310053219. The next prime is 402025310053243. The reversal of 402025310053221 is 122350013520204.

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 not a de Polignac number, because 402025310053221 - 2¹ = 402025310053219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402025310053261) 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, 67004218342201 + ... + 67004218342206.

It is an arithmetic number, because the mean of its divisors is an integer number (134008436684408).

Almost surely, 2^{402025310053221} is an apocalyptic number.

It is an amenable number.

402025310053221 is a deficient number, since it is larger than the sum of its proper divisors (134008436684411).

402025310053221 is a wasteful number, since it uses less digits than its factorization.

402025310053221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134008436684410.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 402025310053221 its reverse (122350013520204), we get a palindrome (524375323573425).

The spelling of 402025310053221 in words is "four hundred two trillion, twenty-five billion, three hundred ten million, fifty-three thousand, two hundred twenty-one".