87228669025 has 9 divisors (see below), whose sum is σ = 108165380761. Its totient is φ = 69781753840.

The previous prime is 87228669019. The next prime is 87228669037. The reversal of 87228669025 is 52096682278.

It is a happy number.

The square root of 87228669025 is 295345.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1412481889 + 85816187136 = 37583^2 + 292944^2 .

It is a de Polignac number, because none of the positive numbers 2^k-87228669025 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1447191 + ... + 1506259.

Almost surely, 2^87228669025 is an apocalyptic number.

87228669025 is the 295345-th square number.

87228669025 is the 147673-rd centered octagonal number.

It is an amenable number.

87228669025 is a deficient number, since it is larger than the sum of its proper divisors (20936711736).

87228669025 is an frugal number, since it uses more digits than its factorization.

87228669025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118148 (or 59074 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 87228669025 in words is "eighty-seven billion, two hundred twenty-eight million, six hundred sixty-nine thousand, twenty-five".