25427469547 has 2 divisors, whose sum is σ = 25427469548. Its totient is φ = 25427469546.

The previous prime is 25427469539. The next prime is 25427469593. The reversal of 25427469547 is 74596472452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25427469547 - 2³ = 25427469539 is a prime.

It is a super-2 number, since 2×25427469547² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25427469527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12713734773 + 12713734774.

It is an arithmetic number, because the mean of its divisors is an integer number (12713734774).

Almost surely, 2^25427469547 is an apocalyptic number.

25427469547 is a deficient number, since it is larger than the sum of its proper divisors (1).

25427469547 is an equidigital number, since it uses as much as digits as its factorization.

25427469547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16934400, while the sum is 55.

The spelling of 25427469547 in words is "twenty-five billion, four hundred twenty-seven million, four hundred sixty-nine thousand, five hundred forty-seven".