25535676457 has 16 divisors (see below), whose sum is σ = 26499266640. Its totient is φ = 24589312000.

The previous prime is 25535676437. The next prime is 25535676479. The reversal of 25535676457 is 75467653552.

It can be written as a sum of positive squares in 8 ways, for example, as 3414766096 + 22120910361 = 58436^2 + 148731^2 .

It is a cyclic number.

It is not a de Polignac number, because 25535676457 - 2⁷ = 25535676329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25535676398 and 25535676407.

It is not an unprimeable number, because it can be changed into a prime (25535676427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2157957 + ... + 2169757.

It is an arithmetic number, because the mean of its divisors is an integer number (1656204165).

Almost surely, 2^25535676457 is an apocalyptic number.

It is an amenable number.

25535676457 is a deficient number, since it is larger than the sum of its proper divisors (963590183).

25535676457 is a wasteful number, since it uses less digits than its factorization.

25535676457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12524.

The product of its digits is 26460000, while the sum is 55.

The spelling of 25535676457 in words is "twenty-five billion, five hundred thirty-five million, six hundred seventy-six thousand, four hundred fifty-seven".