55136215625 has 48 divisors (see below), whose sum is σ = 70581076272. Its totient is φ = 43056000000.

The previous prime is 55136215621. The next prime is 55136215661. The reversal of 55136215625 is 52651263155.

It can be written as a sum of positive squares in 24 ways, for example, as 48719084176 + 6417131449 = 220724^2 + 80107^2 .

It is not a de Polignac number, because 55136215625 - 2² = 55136215621 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55136215621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23039429 + ... + 23041821.

It is an arithmetic number, because the mean of its divisors is an integer number (1470439089).

Almost surely, 2^55136215625 is an apocalyptic number.

It is an amenable number.

55136215625 is a deficient number, since it is larger than the sum of its proper divisors (15444860647).

55136215625 is an equidigital number, since it uses as much as digits as its factorization.

55136215625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2592 (or 2572 counting only the distinct ones).

The product of its digits is 270000, while the sum is 41.

The spelling of 55136215625 in words is "fifty-five billion, one hundred thirty-six million, two hundred fifteen thousand, six hundred twenty-five".