69225391 has 2 divisors, whose sum is σ = 69225392. Its totient is φ = 69225390.

The previous prime is 69225361. The next prime is 69225413. The reversal of 69225391 is 19352296.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 69225391 - 2²¹ = 67128239 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 69225391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69225361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34612695 + 34612696.

It is an arithmetic number, because the mean of its divisors is an integer number (34612696).

Almost surely, 2^69225391 is an apocalyptic number.

69225391 is a deficient number, since it is larger than the sum of its proper divisors (1).

69225391 is an equidigital number, since it uses as much as digits as its factorization.

69225391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 37.

The square root of 69225391 is about 8320.1797456545. The cubic root of 69225391 is about 410.6027046994.

The spelling of 69225391 in words is "sixty-nine million, two hundred twenty-five thousand, three hundred ninety-one".