25495657063 has 16 divisors (see below), whose sum is σ = 25840853280. Its totient is φ = 25153623936.

The previous prime is 25495657043. The next prime is 25495657087. The reversal of 25495657063 is 36075659452.

It is a cyclic number.

It is not a de Polignac number, because 25495657063 - 2²¹ = 25493559911 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25495657063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25495657003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12765981 + ... + 12767977.

It is an arithmetic number, because the mean of its divisors is an integer number (1615053330).

Almost surely, 2^25495657063 is an apocalyptic number.

25495657063 is a deficient number, since it is larger than the sum of its proper divisors (345196217).

25495657063 is a wasteful number, since it uses less digits than its factorization.

25495657063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706.

The product of its (nonzero) digits is 6804000, while the sum is 52.

The spelling of 25495657063 in words is "twenty-five billion, four hundred ninety-five million, six hundred fifty-seven thousand, sixty-three".