25345352531 has 2 divisors, whose sum is σ = 25345352532. Its totient is φ = 25345352530.

The previous prime is 25345352509. The next prime is 25345352533. The reversal of 25345352531 is 13525354352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25345352531 - 2¹⁴ = 25345336147 is a prime.

It is a super-2 number, since 2×25345352531² (a number of 22 digits) contains 22 as substring.

Together with 25345352533, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25345352533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12672676265 + 12672676266.

It is an arithmetic number, because the mean of its divisors is an integer number (12672676266).

Almost surely, 2^25345352531 is an apocalyptic number.

25345352531 is a deficient number, since it is larger than the sum of its proper divisors (1).

25345352531 is an equidigital number, since it uses as much as digits as its factorization.

25345352531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270000, while the sum is 38.

The spelling of 25345352531 in words is "twenty-five billion, three hundred forty-five million, three hundred fifty-two thousand, five hundred thirty-one".