87787525 has 24 divisors (see below), whose sum is σ = 124884864. Its totient is φ = 59966400.

The previous prime is 87787517. The next prime is 87787547. The reversal of 87787525 is 52578778.

It is a happy number.

87787525 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 87787525 - 2³ = 87787517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53619 + ... + 55231.

It is an arithmetic number, because the mean of its divisors is an integer number (5203536).

Almost surely, 2^87787525 is an apocalyptic number.

It is an amenable number.

87787525 is a deficient number, since it is larger than the sum of its proper divisors (37097339).

87787525 is a wasteful number, since it uses less digits than its factorization.

87787525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941 (or 1936 counting only the distinct ones).

The product of its digits is 1097600, while the sum is 49.

The square root of 87787525 is about 9369.4997198356. The cubic root of 87787525 is about 444.4377446328.

The spelling of 87787525 in words is "eighty-seven million, seven hundred eighty-seven thousand, five hundred twenty-five".