85102425 has 72 divisors (see below), whose sum is σ = 170033760. Its totient is φ = 40435200.

The previous prime is 85102379. The next prime is 85102427. The reversal of 85102425 is 52420158.

It is a happy number.

It is not a de Polignac number, because 85102425 - 2⁶ = 85102361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85102427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 72090 + ... + 73260.

It is an arithmetic number, because the mean of its divisors is an integer number (2361580).

Almost surely, 2^85102425 is an apocalyptic number.

85102425 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

85102425 is a deficient number, since it is larger than the sum of its proper divisors (84931335).

85102425 is a wasteful number, since it uses less digits than its factorization.

85102425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223 (or 1215 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 85102425 is about 9225.0975604597. The cubic root of 85102425 is about 439.8595023184.

The spelling of 85102425 in words is "eighty-five million, one hundred two thousand, four hundred twenty-five".