20625435053554 has 4 divisors (see below), whose sum is σ = 30938152580334. Its totient is φ = 10312717526776.

The previous prime is 20625435053507. The next prime is 20625435053599. The reversal of 20625435053554 is 45535053452602.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20602384830225 + 23050223329 = 4538985^2 + 151823^2 .

It is a super-2 number, since 2×20625435053554² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20625435053498 and 20625435053507.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5156358763387 + ... + 5156358763390.

Almost surely, 2^{20625435053554} is an apocalyptic number.

20625435053554 is a deficient number, since it is larger than the sum of its proper divisors (10312717526780).

20625435053554 is a wasteful number, since it uses less digits than its factorization.

20625435053554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10312717526779.

The product of its (nonzero) digits is 10800000, while the sum is 49.

The spelling of 20625435053554 in words is "twenty trillion, six hundred twenty-five billion, four hundred thirty-five million, fifty-three thousand, five hundred fifty-four".