85470025 has 15 divisors (see below), whose sum is σ = 108506231. Its totient is φ = 66785880.

The previous prime is 85470019. The next prime is 85470029. The reversal of 85470025 is 52007458.

The square root of 85470025 is 9245.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 30769209 + 54700816 = 5547^2 + 7396^2 .

It is a de Polignac number, because none of the positive numbers 2^k-85470025 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85470029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1987654 + ... + 1987696.

Almost surely, 2^85470025 is an apocalyptic number.

85470025 is the 9245-th square number.

85470025 is the 4623-rd centered octagonal number.

It is an amenable number.

85470025 is a deficient number, since it is larger than the sum of its proper divisors (23036206).

85470025 is an frugal number, since it uses more digits than its factorization.

85470025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The cubic root of 85470025 is about 440.4919171214.

The spelling of 85470025 in words is "eighty-five million, four hundred seventy thousand, twenty-five".