25701457783 has 2 divisors, whose sum is σ = 25701457784. Its totient is φ = 25701457782.

The previous prime is 25701457723. The next prime is 25701457799. The reversal of 25701457783 is 38775410752.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25701457783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25701457703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12850728891 + 12850728892.

It is an arithmetic number, because the mean of its divisors is an integer number (12850728892).

Almost surely, 2^25701457783 is an apocalyptic number.

25701457783 is a deficient number, since it is larger than the sum of its proper divisors (1).

25701457783 is an equidigital number, since it uses as much as digits as its factorization.

25701457783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1646400, while the sum is 49.

The spelling of 25701457783 in words is "twenty-five billion, seven hundred one million, four hundred fifty-seven thousand, seven hundred eighty-three".