252215421405 has 8 divisors (see below), whose sum is σ = 403544674272. Its totient is φ = 134514891408.

The previous prime is 252215421377. The next prime is 252215421433. The reversal of 252215421405 is 504124512252.

It is an interprime number because it is at equal distance from previous prime (252215421377) and next prime (252215421433).

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

It is not a de Polignac number, because 252215421405 - 2⁵ = 252215421373 is a prime.

It is a super-2 number, since 2×252215421405² (a number of 24 digits) contains 22 as substring.

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, 8407180699 + ... + 8407180728.

It is an arithmetic number, because the mean of its divisors is an integer number (50443084284).

Almost surely, 2^252215421405 is an apocalyptic number.

It is an amenable number.

252215421405 is a deficient number, since it is larger than the sum of its proper divisors (151329252867).

252215421405 is a wasteful number, since it uses less digits than its factorization.

252215421405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16814361435.

The product of its (nonzero) digits is 32000, while the sum is 33.

Adding to 252215421405 its reverse (504124512252), we get a palindrome (756339933657).

The spelling of 252215421405 in words is "two hundred fifty-two billion, two hundred fifteen million, four hundred twenty-one thousand, four hundred five".