25535773164 has 24 divisors (see below), whose sum is σ = 65000150208. Its totient is φ = 7738113040.

The previous prime is 25535773163. The next prime is 25535773183. The reversal of 25535773164 is 46137753552.

It is a super-2 number, since 2×25535773164² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (25535773163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96726282 + ... + 96726545.

It is an arithmetic number, because the mean of its divisors is an integer number (2708339592).

Almost surely, 2^25535773164 is an apocalyptic number.

It is an amenable number.

25535773164 is an abundant number, since it is smaller than the sum of its proper divisors (39464377044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25535773164 is a wasteful number, since it uses less digits than its factorization.

25535773164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193452845 (or 193452843 counting only the distinct ones).

The product of its digits is 2646000, while the sum is 48.

The spelling of 25535773164 in words is "twenty-five billion, five hundred thirty-five million, seven hundred seventy-three thousand, one hundred sixty-four".