87769025 has 12 divisors (see below), whose sum is σ = 108955452. Its totient is φ = 70136640.

The previous prime is 87769013. The next prime is 87769027. The reversal of 87769025 is 52096778.

It can be written as a sum of positive squares in 6 ways, for example, as 2262016 + 85507009 = 1504^2 + 9247^2 .

It is not a de Polignac number, because 87769025 - 2¹⁰ = 87768001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87769027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33047 + ... + 35603.

It is an arithmetic number, because the mean of its divisors is an integer number (9079621).

Almost surely, 2^87769025 is an apocalyptic number.

It is an amenable number.

87769025 is a deficient number, since it is larger than the sum of its proper divisors (21186427).

87769025 is a wasteful number, since it uses less digits than its factorization.

87769025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3940 (or 3935 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 87769025 is about 9368.5124219376. The cubic root of 87769025 is about 444.4065227483.

The spelling of 87769025 in words is "eighty-seven million, seven hundred sixty-nine thousand, twenty-five".