25113640511 has 4 divisors (see below), whose sum is σ = 25125307152. Its totient is φ = 25101973872.

The previous prime is 25113640477. The next prime is 25113640627. The reversal of 25113640511 is 11504631152.

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 25113640511 - 2²² = 25109446207 is a prime.

It is a super-2 number, since 2×25113640511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25113640411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5830091 + ... + 5834396.

It is an arithmetic number, because the mean of its divisors is an integer number (6281326788).

Almost surely, 2^25113640511 is an apocalyptic number.

25113640511 is a deficient number, since it is larger than the sum of its proper divisors (11666641).

25113640511 is a wasteful number, since it uses less digits than its factorization.

25113640511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11666640.

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 25113640511 in words is "twenty-five billion, one hundred thirteen million, six hundred forty thousand, five hundred eleven".