87990125 has 12 divisors (see below), whose sum is σ = 109942716. Its totient is φ = 70308200.

The previous prime is 87990101. The next prime is 87990137. The reversal of 87990125 is 52109978.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 2815684 + 85174441 = 1678^2 + 9229^2 .

It is not a de Polignac number, because 87990125 - 2¹⁰ = 87989101 is a prime.

It is a Duffinian number.

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, 104456 + ... + 105294.

It is an arithmetic number, because the mean of its divisors is an integer number (9161893).

Almost surely, 2^87990125 is an apocalyptic number.

It is an amenable number.

87990125 is a deficient number, since it is larger than the sum of its proper divisors (21952591).

87990125 is an frugal number, since it uses more digits than its factorization.

87990125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 87990125 is about 9380.3051656116. The cubic root of 87990125 is about 444.7793797616.

The spelling of 87990125 in words is "eighty-seven million, nine hundred ninety thousand, one hundred twenty-five".