25270774221 has 16 divisors (see below), whose sum is σ = 42008560128. Its totient is φ = 13127674800.

The previous prime is 25270774211. The next prime is 25270774229. The reversal of 25270774221 is 12247707252.

It is not a de Polignac number, because 25270774221 - 2¹⁵ = 25270741453 is a prime.

It is a super-2 number, since 2×25270774221² (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 25270774221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25270774229) 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, 54698415 + ... + 54698876.

It is an arithmetic number, because the mean of its divisors is an integer number (2625535008).

Almost surely, 2^25270774221 is an apocalyptic number.

25270774221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25270774221 is a deficient number, since it is larger than the sum of its proper divisors (16737785907).

25270774221 is a wasteful number, since it uses less digits than its factorization.

25270774221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109397312.

The product of its (nonzero) digits is 109760, while the sum is 39.

The spelling of 25270774221 in words is "twenty-five billion, two hundred seventy million, seven hundred seventy-four thousand, two hundred twenty-one".