25712945585 has 16 divisors (see below), whose sum is σ = 30919855680. Its totient is φ = 20527525440.

The previous prime is 25712945579. The next prime is 25712945591. The reversal of 25712945585 is 58554921752.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25712945579) and next prime (25712945591).

It is not a de Polignac number, because 25712945585 - 2¹² = 25712941489 is a prime.

It is a super-4 number, since 4×25712945585⁴ (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7025486 + ... + 7029144.

It is an arithmetic number, because the mean of its divisors is an integer number (1932490980).

Almost surely, 2^25712945585 is an apocalyptic number.

It is an amenable number.

25712945585 is a deficient number, since it is larger than the sum of its proper divisors (5206910095).

25712945585 is a wasteful number, since it uses less digits than its factorization.

25712945585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6208.

The product of its digits is 5040000, while the sum is 53.

The spelling of 25712945585 in words is "twenty-five billion, seven hundred twelve million, nine hundred forty-five thousand, five hundred eighty-five".