25246805057 has 4 divisors (see below), whose sum is σ = 25247159040. Its totient is φ = 25246451076.

The previous prime is 25246805041. The next prime is 25246805081. The reversal of 25246805057 is 75050864252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25246805057 - 2⁴ = 25246805041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25246804999 and 25246805017.

It is not an unprimeable number, because it can be changed into a prime (25246805557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28457 + ... + 226502.

It is an arithmetic number, because the mean of its divisors is an integer number (6311789760).

Almost surely, 2^25246805057 is an apocalyptic number.

It is an amenable number.

25246805057 is a deficient number, since it is larger than the sum of its proper divisors (353983).

25246805057 is an equidigital number, since it uses as much as digits as its factorization.

25246805057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353982.

The product of its (nonzero) digits is 672000, while the sum is 44.

The spelling of 25246805057 in words is "twenty-five billion, two hundred forty-six million, eight hundred five thousand, fifty-seven".