25523845457 has 24 divisors (see below), whose sum is σ = 28667681280. Its totient is φ = 22536480960.

The previous prime is 25523845421. The next prime is 25523845471. The reversal of 25523845457 is 75454832552.

It is a happy number.

It is not a de Polignac number, because 25523845457 - 2¹⁰ = 25523844433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25523845157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11398544 + ... + 11400782.

It is an arithmetic number, because the mean of its divisors is an integer number (1194486720).

Almost surely, 2^25523845457 is an apocalyptic number.

It is an amenable number.

25523845457 is a deficient number, since it is larger than the sum of its proper divisors (3143835823).

25523845457 is a wasteful number, since it uses less digits than its factorization.

25523845457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081 (or 3044 counting only the distinct ones).

The product of its digits is 6720000, while the sum is 50.

The spelling of 25523845457 in words is "twenty-five billion, five hundred twenty-three million, eight hundred forty-five thousand, four hundred fifty-seven".