25461476545 has 8 divisors (see below), whose sum is σ = 30730384296. Its totient is φ = 20251439616.

The previous prime is 25461476507. The next prime is 25461476561. The reversal of 25461476545 is 54567416452.

It can be written as a sum of positive squares in 4 ways, for example, as 1404225729 + 24057250816 = 37473^2 + 155104^2 .

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 25461476545 - 2¹⁷ = 25461345473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14716752 + ... + 14718481.

It is an arithmetic number, because the mean of its divisors is an integer number (3841298037).

Almost surely, 2^25461476545 is an apocalyptic number.

It is an amenable number.

25461476545 is a deficient number, since it is larger than the sum of its proper divisors (5268907751).

25461476545 is a wasteful number, since it uses less digits than its factorization.

25461476545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29435411.

The product of its digits is 4032000, while the sum is 49.

The spelling of 25461476545 in words is "twenty-five billion, four hundred sixty-one million, four hundred seventy-six thousand, five hundred forty-five".