25420220553 has 32 divisors (see below), whose sum is σ = 41873965056. Its totient is φ = 13357447488.

The previous prime is 25420220549. The next prime is 25420220557. The reversal of 25420220553 is 35502202452.

It is an interprime number because it is at equal distance from previous prime (25420220549) and next prime (25420220557).

It is not a de Polignac number, because 25420220553 - 2² = 25420220549 is a prime.

It is a super-2 number, since 2×25420220553² (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 25420220553.

It is not an unprimeable number, because it can be changed into a prime (25420220557) 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 31 ways as a sum of consecutive naturals, for example, 105225 + ... + 248822.

It is an arithmetic number, because the mean of its divisors is an integer number (1308561408).

Almost surely, 2^25420220553 is an apocalyptic number.

It is an amenable number.

25420220553 is a deficient number, since it is larger than the sum of its proper divisors (16453744503).

25420220553 is a wasteful number, since it uses less digits than its factorization.

25420220553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354333.

The product of its (nonzero) digits is 24000, while the sum is 30.

The spelling of 25420220553 in words is "twenty-five billion, four hundred twenty million, two hundred twenty thousand, five hundred fifty-three".