25140356111 has 4 divisors (see below), whose sum is σ = 27074229672. Its totient is φ = 23206482552.

The previous prime is 25140356083. The next prime is 25140356173. The reversal of 25140356111 is 11165304152.

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 25140356111 - 2³⁰ = 24066614287 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 (25140356191) 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, 966936761 + ... + 966936786.

It is an arithmetic number, because the mean of its divisors is an integer number (6768557418).

Almost surely, 2^25140356111 is an apocalyptic number.

25140356111 is a deficient number, since it is larger than the sum of its proper divisors (1933873561).

25140356111 is a wasteful number, since it uses less digits than its factorization.

25140356111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933873560.

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

The spelling of 25140356111 in words is "twenty-five billion, one hundred forty million, three hundred fifty-six thousand, one hundred eleven".