25240851065 has 48 divisors (see below), whose sum is σ = 32957064000. Its totient is φ = 18548032512.

The previous prime is 25240851049. The next prime is 25240851067. The reversal of 25240851065 is 56015804252.

It is not a de Polignac number, because 25240851065 - 2⁴ = 25240851049 is a prime.

It is a super-3 number, since 3×25240851065³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (25240851067) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12702002 + ... + 12703988.

It is an arithmetic number, because the mean of its divisors is an integer number (686605500).

Almost surely, 2^25240851065 is an apocalyptic number.

It is an amenable number.

25240851065 is a deficient number, since it is larger than the sum of its proper divisors (7716212935).

25240851065 is a wasteful number, since it uses less digits than its factorization.

25240851065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2234 (or 2217 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 38.

The spelling of 25240851065 in words is "twenty-five billion, two hundred forty million, eight hundred fifty-one thousand, sixty-five".