20416001401525 has 6 divisors (see below), whose sum is σ = 25315841737922. Its totient is φ = 16332801121200.

The previous prime is 20416001401519. The next prime is 20416001401547. The reversal of 20416001401525 is 52510410061402.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 6255486203409 + 14160515198116 = 2501097^2 + 3763046^2 .

It is not a de Polignac number, because 20416001401525 - 2¹¹ = 20416001399477 is a prime.

It is a super-2 number, since 2×20416001401525² (a number of 27 digits) contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 408320028006 + ... + 408320028055.

Almost surely, 2^{20416001401525} is an apocalyptic number.

20416001401525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20416001401525 is a deficient number, since it is larger than the sum of its proper divisors (4899840336397).

20416001401525 is an equidigital number, since it uses as much as digits as its factorization.

20416001401525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816640056071 (or 816640056066 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 20416001401525 its reverse (52510410061402), we get a palindrome (72926411462927).

The spelling of 20416001401525 in words is "twenty trillion, four hundred sixteen billion, one million, four hundred one thousand, five hundred twenty-five".