65261564312025 has 24 divisors (see below), whose sum is σ = 110530805513184. Its totient is φ = 33957236713600.

The previous prime is 65261564312017. The next prime is 65261564312033. The reversal of 65261564312025 is 52021346516256.

It is an interprime number because it is at equal distance from previous prime (65261564312017) and next prime (65261564312033).

It is not a de Polignac number, because 65261564312025 - 2³ = 65261564312017 is a prime.

It is a super-2 number, since 2×65261564312025² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10611633399 + ... + 10611639548.

It is an arithmetic number, because the mean of its divisors is an integer number (4605450229716).

Almost surely, 2^{65261564312025} is an apocalyptic number.

It is an amenable number.

65261564312025 is a deficient number, since it is larger than the sum of its proper divisors (45269241201159).

65261564312025 is a wasteful number, since it uses less digits than its factorization.

65261564312025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21223273001 (or 21223272996 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 65261564312025 in words is "sixty-five trillion, two hundred sixty-one billion, five hundred sixty-four million, three hundred twelve thousand, twenty-five".