69225521 has 2 divisors, whose sum is σ = 69225522. Its totient is φ = 69225520.

The previous prime is 69225517. The next prime is 69225551. The reversal of 69225521 is 12552296.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42393121 + 26832400 = 6511^2 + 5180^2 .

It is a cyclic number.

It is not a de Polignac number, because 69225521 - 2² = 69225517 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (69225551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34612760 + 34612761.

It is an arithmetic number, because the mean of its divisors is an integer number (34612761).

Almost surely, 2^69225521 is an apocalyptic number.

It is an amenable number.

69225521 is a deficient number, since it is larger than the sum of its proper divisors (1).

69225521 is an equidigital number, since it uses as much as digits as its factorization.

69225521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 32.

The square root of 69225521 is about 8320.1875579821. The cubic root of 69225521 is about 410.6029617261.

The spelling of 69225521 in words is "sixty-nine million, two hundred twenty-five thousand, five hundred twenty-one".