90250007 has 2 divisors, whose sum is σ = 90250008. Its totient is φ = 90250006.

The previous prime is 90249997. The next prime is 90250009. The reversal of 90250007 is 70005209.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90250007 - 2⁸ = 90249751 is a prime.

Together with 90250009, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90250009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45125003 + 45125004.

It is an arithmetic number, because the mean of its divisors is an integer number (45125004).

Almost surely, 2^90250007 is an apocalyptic number.

90250007 is a deficient number, since it is larger than the sum of its proper divisors (1).

90250007 is an equidigital number, since it uses as much as digits as its factorization.

90250007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 90250007 is about 9500.0003684210. Note that the first 3 decimals coincide. The cubic root of 90250007 is about 448.5550475202. Note that the first 3 decimals are identical.

The spelling of 90250007 in words is "ninety million, two hundred fifty thousand, seven".