25703645051 has 8 divisors (see below), whose sum is σ = 29396105184. Its totient is φ = 22016312640.

The previous prime is 25703645029. The next prime is 25703645063. The reversal of 25703645051 is 15054630752.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25703645051 - 2¹⁸ = 25703382907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25703644996 and 25703645014.

It is not an unprimeable number, because it can be changed into a prime (25703645021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1271180 + ... + 1291241.

It is an arithmetic number, because the mean of its divisors is an integer number (3674513148).

Almost surely, 2^25703645051 is an apocalyptic number.

25703645051 is a deficient number, since it is larger than the sum of its proper divisors (3692460133).

25703645051 is a wasteful number, since it uses less digits than its factorization.

25703645051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2563861.

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 25703645051 in words is "twenty-five billion, seven hundred three million, six hundred forty-five thousand, fifty-one".