25457228657 has 16 divisors (see below), whose sum is σ = 29658752640. Its totient is φ = 21397339392.

The previous prime is 25457228611. The next prime is 25457228711. The reversal of 25457228657 is 75682275452.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 25457228657 - 2³² = 21162261361 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25457228599 and 25457228608.

It is not an unprimeable number, because it can be changed into a prime (25457228057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 716873 + ... + 751545.

It is an arithmetic number, because the mean of its divisors is an integer number (1853672040).

Almost surely, 2^25457228657 is an apocalyptic number.

It is an amenable number.

25457228657 is a deficient number, since it is larger than the sum of its proper divisors (4201523983).

25457228657 is a wasteful number, since it uses less digits than its factorization.

25457228657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36712.

The product of its digits is 9408000, while the sum is 53.

The spelling of 25457228657 in words is "twenty-five billion, four hundred fifty-seven million, two hundred twenty-eight thousand, six hundred fifty-seven".