85770425 has 12 divisors (see below), whose sum is σ = 114536940. Its totient is φ = 63337920.

The previous prime is 85770359. The next prime is 85770439. The reversal of 85770425 is 52407758.

It can be written as a sum of positive squares in 6 ways, for example, as 3396649 + 82373776 = 1843^2 + 9076^2 .

It is not a de Polignac number, because 85770425 - 2²⁴ = 68993209 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent 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, 131630 + ... + 132279.

It is an arithmetic number, because the mean of its divisors is an integer number (9544745).

Almost surely, 2^85770425 is an apocalyptic number.

It is an amenable number.

85770425 is a deficient number, since it is larger than the sum of its proper divisors (28766515).

85770425 is a wasteful number, since it uses less digits than its factorization.

85770425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263932 (or 263927 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 85770425 is about 9261.2323693988. The cubic root of 85770425 is about 441.0073767755.

The spelling of 85770425 in words is "eighty-five million, seven hundred seventy thousand, four hundred twenty-five".