87583725 has 36 divisors (see below), whose sum is σ = 158528916. Its totient is φ = 46218240.

The previous prime is 87583697. The next prime is 87583729. The reversal of 87583725 is 52738578.

It can be written as a sum of positive squares in 6 ways, for example, as 30276 + 87553449 = 174^2 + 9357^2 .

It is not a de Polignac number, because 87583725 - 2⁵ = 87583693 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87583729) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 19819 + ... + 23831.

It is an arithmetic number, because the mean of its divisors is an integer number (4403581).

Almost surely, 2^87583725 is an apocalyptic number.

It is an amenable number.

87583725 is a deficient number, since it is larger than the sum of its proper divisors (70945191).

87583725 is a wasteful number, since it uses less digits than its factorization.

87583725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4126 (or 4118 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 87583725 is about 9358.6176863894. The cubic root of 87583725 is about 444.0935552795.

The spelling of 87583725 in words is "eighty-seven million, five hundred eighty-three thousand, seven hundred twenty-five".