87140125 has 8 divisors (see below), whose sum is σ = 108751032. Its totient is φ = 69712000.

The previous prime is 87140111. The next prime is 87140153. The reversal of 87140125 is 52104178.

It can be written as a sum of positive squares in 4 ways, for example, as 1058841 + 86081284 = 1029^2 + 9278^2 .

It is not a de Polignac number, because 87140125 - 2¹⁵ = 87107357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87140093 and 87140102.

It is a congruent number.

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, 348436 + ... + 348685.

It is an arithmetic number, because the mean of its divisors is an integer number (13593879).

Almost surely, 2^87140125 is an apocalyptic number.

It is an amenable number.

87140125 is a deficient number, since it is larger than the sum of its proper divisors (21610907).

87140125 is an equidigital number, since it uses as much as digits as its factorization.

87140125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697136 (or 697126 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 87140125 is about 9334.8875194080. The cubic root of 87140125 is about 443.3425274945.

The spelling of 87140125 in words is "eighty-seven million, one hundred forty thousand, one hundred twenty-five".