25145448578 has 32 divisors (see below), whose sum is σ = 42832074240. Its totient is φ = 10998823680.

The previous prime is 25145448569. The next prime is 25145448589. The reversal of 25145448578 is 87584454152.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332978 + ... + 401453.

It is an arithmetic number, because the mean of its divisors is an integer number (1338502320).

Almost surely, 2^25145448578 is an apocalyptic number.

25145448578 is a deficient number, since it is larger than the sum of its proper divisors (17686625662).

25145448578 is a wasteful number, since it uses less digits than its factorization.

25145448578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734522.

The product of its digits is 7168000, while the sum is 53.

The spelling of 25145448578 in words is "twenty-five billion, one hundred forty-five million, four hundred forty-eight thousand, five hundred seventy-eight".