90025679 has 2 divisors, whose sum is σ = 90025680. Its totient is φ = 90025678.

The previous prime is 90025673. The next prime is 90025687. The reversal of 90025679 is 97652009.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90025679 - 2¹² = 90021583 is a prime.

It is a super-2 number, since 2×90025679² = 16209245758822082, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90025673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45012839 + 45012840.

It is an arithmetic number, because the mean of its divisors is an integer number (45012840).

Almost surely, 2^90025679 is an apocalyptic number.

90025679 is a deficient number, since it is larger than the sum of its proper divisors (1).

90025679 is an equidigital number, since it uses as much as digits as its factorization.

90025679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 90025679 is about 9488.1862861139. The cubic root of 90025679 is about 448.1830920814.

The spelling of 90025679 in words is "ninety million, twenty-five thousand, six hundred seventy-nine".