25372157747 has 2 divisors, whose sum is σ = 25372157748. Its totient is φ = 25372157746.

The previous prime is 25372157743. The next prime is 25372157777. The reversal of 25372157747 is 74775127352.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25372157747 - 2² = 25372157743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25372157695 and 25372157704.

It is not a weakly prime, because it can be changed into another prime (25372157743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12686078873 + 12686078874.

It is an arithmetic number, because the mean of its divisors is an integer number (12686078874).

Almost surely, 2^25372157747 is an apocalyptic number.

25372157747 is a deficient number, since it is larger than the sum of its proper divisors (1).

25372157747 is an equidigital number, since it uses as much as digits as its factorization.

25372157747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2881200, while the sum is 50.

The spelling of 25372157747 in words is "twenty-five billion, three hundred seventy-two million, one hundred fifty-seven thousand, seven hundred forty-seven".