21514011514425 has 120 divisors (see below), whose sum is σ = 41588236039680. Its totient is φ = 10974160454400.

The previous prime is 21514011514403. The next prime is 21514011514459. The reversal of 21514011514425 is 52441511041512.

21514011514425 is a `hidden beast` number, since 2 + 1 + 51 + 40 + 11 + 514 + 42 + 5 = 666.

It is not a de Polignac number, because 21514011514425 - 2⁵ = 21514011514393 is a prime.

It is a super-2 number, since 2×21514011514425² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21514011514425.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 672107821 + ... + 672139829.

It is an arithmetic number, because the mean of its divisors is an integer number (346568633664).

Almost surely, 2^{21514011514425} is an apocalyptic number.

21514011514425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21514011514425 is a deficient number, since it is larger than the sum of its proper divisors (20074224525255).

21514011514425 is a wasteful number, since it uses less digits than its factorization.

21514011514425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46485 (or 46471 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 36.

Adding to 21514011514425 its reverse (52441511041512), we get a palindrome (73955522555937).

The spelling of 21514011514425 in words is "twenty-one trillion, five hundred fourteen billion, eleven million, five hundred fourteen thousand, four hundred twenty-five".