25040404605 has 32 divisors (see below), whose sum is σ = 40806754560. Its totient is φ = 13109160960.

The previous prime is 25040404603. The next prime is 25040404633. The reversal of 25040404605 is 50640404052.

It is not a de Polignac number, because 25040404605 - 2¹ = 25040404603 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25040404601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192549 + ... + 295221.

It is an arithmetic number, because the mean of its divisors is an integer number (1275211080).

Almost surely, 2^25040404605 is an apocalyptic number.

It is an amenable number.

25040404605 is a deficient number, since it is larger than the sum of its proper divisors (15766349955).

25040404605 is a wasteful number, since it uses less digits than its factorization.

25040404605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102981.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 25040404605 its reverse (50640404052), we get a palindrome (75680808657).

The spelling of 25040404605 in words is "twenty-five billion, forty million, four hundred four thousand, six hundred five".