84090425 has 6 divisors (see below), whose sum is σ = 104272158. Its totient is φ = 67272320.

The previous prime is 84090407. The next prime is 84090431. The reversal of 84090425 is 52409048.

It can be written as a sum of positive squares in 3 ways, for example, as 11363641 + 72726784 = 3371^2 + 8528^2 .

It is not a de Polignac number, because 84090425 - 2¹⁸ = 83828281 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84090391 and 84090400.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1681784 + ... + 1681833.

It is an arithmetic number, because the mean of its divisors is an integer number (17378693).

Almost surely, 2^84090425 is an apocalyptic number.

It is an amenable number.

84090425 is a deficient number, since it is larger than the sum of its proper divisors (20181733).

84090425 is a wasteful number, since it uses less digits than its factorization.

84090425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3363627 (or 3363622 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 84090425 is about 9170.0831512042. The cubic root of 84090425 is about 438.1090076397.

The spelling of 84090425 in words is "eighty-four million, ninety thousand, four hundred twenty-five".