53221001525 has 12 divisors (see below), whose sum is σ = 66025369344. Its totient is φ = 42556590000.

The previous prime is 53221001489. The next prime is 53221001527. The reversal of 53221001525 is 52510012235.

It is not a de Polignac number, because 53221001525 - 2⁶ = 53221001461 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53221001494 and 53221001503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53221001527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 451451 + ... + 557000.

It is an arithmetic number, because the mean of its divisors is an integer number (5502114112).

Almost surely, 2^53221001525 is an apocalyptic number.

It is an amenable number.

53221001525 is a deficient number, since it is larger than the sum of its proper divisors (12804367819).

53221001525 is a wasteful number, since it uses less digits than its factorization.

53221001525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010572 (or 1010567 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The spelling of 53221001525 in words is "fifty-three billion, two hundred twenty-one million, one thousand, five hundred twenty-five".