25435555545 has 16 divisors (see below), whose sum is σ = 40706398080. Its totient is φ = 13562459904.

The previous prime is 25435555489. The next prime is 25435555547. The reversal of 25435555545 is 54555553452.

It is not a de Polignac number, because 25435555545 - 2¹⁹ = 25435031257 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25435555494 and 25435555503.

It is not an unprimeable number, because it can be changed into a prime (25435555547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131040 + ... + 260849.

It is an arithmetic number, because the mean of its divisors is an integer number (2544149880).

Almost surely, 2^25435555545 is an apocalyptic number.

It is an amenable number.

25435555545 is a deficient number, since it is larger than the sum of its proper divisors (15270842535).

25435555545 is a wasteful number, since it uses less digits than its factorization.

25435555545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396224.

The product of its digits is 7500000, while the sum is 48.

The spelling of 25435555545 in words is "twenty-five billion, four hundred thirty-five million, five hundred fifty-five thousand, five hundred forty-five".