25636151023 has 18 divisors (see below), whose sum is σ = 29741180904. Its totient is φ = 21646688832.

The previous prime is 25636151017. The next prime is 25636151029. The reversal of 25636151023 is 32015163652.

It is an interprime number because it is at equal distance from previous prime (25636151017) and next prime (25636151029).

It is a de Polignac number, because none of the positive numbers 2^k-25636151023 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 25636151023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25636151029) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 30923773 + ... + 30924601.

It is an arithmetic number, because the mean of its divisors is an integer number (1652287828).

Almost surely, 2^25636151023 is an apocalyptic number.

25636151023 is a deficient number, since it is larger than the sum of its proper divisors (4105029881).

25636151023 is an frugal number, since it uses more digits than its factorization.

25636151023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811 (or 909 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 25636151023 in words is "twenty-five billion, six hundred thirty-six million, one hundred fifty-one thousand, twenty-three".