85025040 has 40 divisors (see below), whose sum is σ = 263578368. Its totient is φ = 22673280.

The previous prime is 85025029. The next prime is 85025051. The reversal of 85025040 is 4052058.

It is an interprime number because it is at equal distance from previous prime (85025029) and next prime (85025051).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 85025040.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176896 + ... + 177375.

Almost surely, 2^85025040 is an apocalyptic number.

85025040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85025040 is an abundant number, since it is smaller than the sum of its proper divisors (178553328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85025040 is a wasteful number, since it uses less digits than its factorization.

85025040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354287 (or 354281 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 85025040 is about 9220.9023419620. The cubic root of 85025040 is about 439.7261381200.

Adding to 85025040 its reverse (4052058), we get a palindrome (89077098).

The spelling of 85025040 in words is "eighty-five million, twenty-five thousand, forty".