84040625 has 12 divisors (see below), whose sum is σ = 105047964. Its totient is φ = 67230000.

The previous prime is 84040613. The next prime is 84040631. The reversal of 84040625 is 52604048.

It can be written as a sum of positive squares in 6 ways, for example, as 48052624 + 35988001 = 6932^2 + 5999^2 .

It is not a de Polignac number, because 84040625 - 2⁴ = 84040609 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10322 + ... + 16571.

It is an arithmetic number, because the mean of its divisors is an integer number (8753997).

Almost surely, 2^84040625 is an apocalyptic number.

It is an amenable number.

84040625 is a deficient number, since it is larger than the sum of its proper divisors (21007339).

84040625 is an frugal number, since it uses more digits than its factorization.

84040625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26918 (or 26898 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 84040625 is about 9167.3673974593. The cubic root of 84040625 is about 438.0225049771.

The spelling of 84040625 in words is "eighty-four million, forty thousand, six hundred twenty-five".