25502973473 has 8 divisors (see below), whose sum is σ = 25857294600. Its totient is φ = 25148786688.

The previous prime is 25502973403. The next prime is 25502973511. The reversal of 25502973473 is 37437920552.

It can be written as a sum of positive squares in 4 ways, for example, as 18630066064 + 6872907409 = 136492^2 + 82903^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25502973473 - 2¹² = 25502969377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25502973403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384593 + ... + 446001.

It is an arithmetic number, because the mean of its divisors is an integer number (3232161825).

Almost surely, 2^25502973473 is an apocalyptic number.

It is an amenable number.

25502973473 is a deficient number, since it is larger than the sum of its proper divisors (354321127).

25502973473 is an equidigital number, since it uses as much as digits as its factorization.

25502973473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67171.

The product of its (nonzero) digits is 1587600, while the sum is 47.

The spelling of 25502973473 in words is "twenty-five billion, five hundred two million, nine hundred seventy-three thousand, four hundred seventy-three".