65487369025 has 81 divisors (see below), whose sum is σ = 91580379273. Its totient is φ = 46431403200.

The previous prime is 65487369001. The next prime is 65487369029. The reversal of 65487369025 is 52096378456.

The square root of 65487369025 is 255905.

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 16879466241 + 48607902784 = 129921^2 + 220472^2 .

It is not a de Polignac number, because 65487369025 - 2⁵ = 65487368993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65487369029) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 515648512 + ... + 515648638.

Almost surely, 2^65487369025 is an apocalyptic number.

65487369025 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

65487369025 is the 255905-th square number.

65487369025 is the 127953-rd centered octagonal number.

It is an amenable number.

65487369025 is a deficient number, since it is larger than the sum of its proper divisors (26093010248).

65487369025 is a wasteful number, since it uses less digits than its factorization.

65487369025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 65487369025 in words is "sixty-five billion, four hundred eighty-seven million, three hundred sixty-nine thousand, twenty-five".