25055550553 has 16 divisors (see below), whose sum is σ = 28777271040. Its totient is φ = 21574933200.

The previous prime is 25055550551. The next prime is 25055550557. The reversal of 25055550553 is 35505555052.

It is a happy number.

It is not a de Polignac number, because 25055550553 - 2¹ = 25055550551 is a prime.

It is a super-2 number, since 2×25055550553² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25055550551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1893426 + ... + 1906612.

It is an arithmetic number, because the mean of its divisors is an integer number (1798579440).

Almost surely, 2^25055550553 is an apocalyptic number.

It is an amenable number.

25055550553 is a deficient number, since it is larger than the sum of its proper divisors (3721720487).

25055550553 is a wasteful number, since it uses less digits than its factorization.

25055550553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22308.

The product of its (nonzero) digits is 468750, while the sum is 40.

The spelling of 25055550553 in words is "twenty-five billion, fifty-five million, five hundred fifty thousand, five hundred fifty-three".