25320025101 has 16 divisors (see below), whose sum is σ = 38593438848. Its totient is φ = 14464632000.

The previous prime is 25320025079. The next prime is 25320025103. The reversal of 25320025101 is 10152002352.

It is not a de Polignac number, because 25320025101 - 2²¹ = 25317927949 is a prime.

It is a super-2 number, since 2×25320025101² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25320025103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85170 + ... + 240611.

It is an arithmetic number, because the mean of its divisors is an integer number (2412089928).

Almost surely, 2^25320025101 is an apocalyptic number.

25320025101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25320025101 is a deficient number, since it is larger than the sum of its proper divisors (13273413747).

25320025101 is a wasteful number, since it uses less digits than its factorization.

25320025101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329492.

The product of its (nonzero) digits is 600, while the sum is 21.

Adding to 25320025101 its reverse (10152002352), we get a palindrome (35472027453).

The spelling of 25320025101 in words is "twenty-five billion, three hundred twenty million, twenty-five thousand, one hundred one".