25525161463 has 4 divisors (see below), whose sum is σ = 25811961120. Its totient is φ = 25238361808.

The previous prime is 25525161461. The next prime is 25525161523. The reversal of 25525161463 is 36416152552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25525161463 - 2¹ = 25525161461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25525161461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143399695 + ... + 143399872.

It is an arithmetic number, because the mean of its divisors is an integer number (6452990280).

Almost surely, 2^25525161463 is an apocalyptic number.

25525161463 is a deficient number, since it is larger than the sum of its proper divisors (286799657).

25525161463 is an equidigital number, since it uses as much as digits as its factorization.

25525161463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286799656.

The product of its digits is 216000, while the sum is 40.

The spelling of 25525161463 in words is "twenty-five billion, five hundred twenty-five million, one hundred sixty-one thousand, four hundred sixty-three".