25040052405 has 48 divisors (see below), whose sum is σ = 45919336320. Its totient is φ = 12587508864.

The previous prime is 25040052361. The next prime is 25040052439. The reversal of 25040052405 is 50425004052.

25040052405 is a `hidden beast` number, since 250 + 4 + 0 + 0 + 5 + 2 + 405 = 666.

It is not a de Polignac number, because 25040052405 - 2⁶ = 25040052341 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94104 + ... + 242766.

It is an arithmetic number, because the mean of its divisors is an integer number (956652840).

Almost surely, 2^25040052405 is an apocalyptic number.

It is an amenable number.

25040052405 is a deficient number, since it is larger than the sum of its proper divisors (20879283915).

25040052405 is a wasteful number, since it uses less digits than its factorization.

25040052405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148890 (or 148887 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

Adding to 25040052405 its reverse (50425004052), we get a palindrome (75465056457).

The spelling of 25040052405 in words is "twenty-five billion, forty million, fifty-two thousand, four hundred five".