25265052664 has 16 divisors (see below), whose sum is σ = 48379888800. Its totient is φ = 12363748992.

The previous prime is 25265052661. The next prime is 25265052667. The reversal of 25265052664 is 46625056252.

It is an interprime number because it is at equal distance from previous prime (25265052661) and next prime (25265052667).

It is a super-2 number, since 2×25265052664² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25265052664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25265052661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33596769 + ... + 33597520.

It is an arithmetic number, because the mean of its divisors is an integer number (3023743050).

Almost surely, 2^25265052664 is an apocalyptic number.

It is an amenable number.

25265052664 is a deficient number, since it is larger than the sum of its proper divisors (23114836136).

25265052664 is a wasteful number, since it uses less digits than its factorization.

25265052664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67194342 (or 67194338 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 25265052664 in words is "twenty-five billion, two hundred sixty-five million, fifty-two thousand, six hundred sixty-four".