21525034414 has 64 divisors (see below), whose sum is σ = 36335577600. Its totient is φ = 9495263232.

The previous prime is 21525034411. The next prime is 21525034417. The reversal of 21525034414 is 41443052512.

It is an interprime number because it is at equal distance from previous prime (21525034411) and next prime (21525034417).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21525034411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52628242 + ... + 52628650.

It is an arithmetic number, because the mean of its divisors is an integer number (567743400).

Almost surely, 2^21525034414 is an apocalyptic number.

21525034414 is a deficient number, since it is larger than the sum of its proper divisors (14810543186).

21525034414 is a wasteful number, since it uses less digits than its factorization.

21525034414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 21525034414 its reverse (41443052512), we get a palindrome (62968086926).

The spelling of 21525034414 in words is "twenty-one billion, five hundred twenty-five million, thirty-four thousand, four hundred fourteen".