25748995547531 has 2 divisors, whose sum is σ = 25748995547532. Its totient is φ = 25748995547530.

The previous prime is 25748995547503. The next prime is 25748995547543. The reversal of 25748995547531 is 13574559984752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25748995547531 - 2⁶ = 25748995547467 is a prime.

It is a super-2 number, since 2×25748995547531² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25748995547501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12874497773765 + 12874497773766.

It is an arithmetic number, because the mean of its divisors is an integer number (12874497773766).

Almost surely, 2^{25748995547531} is an apocalyptic number.

25748995547531 is a deficient number, since it is larger than the sum of its proper divisors (1).

25748995547531 is an equidigital number, since it uses as much as digits as its factorization.

25748995547531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120000, while the sum is 74.

The spelling of 25748995547531 in words is "twenty-five trillion, seven hundred forty-eight billion, nine hundred ninety-five million, five hundred forty-seven thousand, five hundred thirty-one".