87020025 has 48 divisors (see below), whose sum is σ = 153793728. Its totient is φ = 43264000.

The previous prime is 87019979. The next prime is 87020029. The reversal of 87020025 is 52002078.

It is not a de Polignac number, because 87020025 - 2²³ = 78631417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87019977 and 87020004.

It is not an unprimeable number, because it can be changed into a prime (87020029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 166765 + ... + 167285.

It is an arithmetic number, because the mean of its divisors is an integer number (3204036).

Almost surely, 2^87020025 is an apocalyptic number.

87020025 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

87020025 is a deficient number, since it is larger than the sum of its proper divisors (66773703).

87020025 is a wasteful number, since it uses less digits than its factorization.

87020025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682 (or 677 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 87020025 is about 9328.4524440016. The cubic root of 87020025 is about 443.1387563922.

The spelling of 87020025 in words is "eighty-seven million, twenty thousand, twenty-five".