25151027591 has 4 divisors (see below), whose sum is σ = 25334611872. Its totient is φ = 24967443312.

The previous prime is 25151027581. The next prime is 25151027593. The reversal of 25151027591 is 19572015152.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25151027591 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 (25151027593) 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, 91791935 + ... + 91792208.

It is an arithmetic number, because the mean of its divisors is an integer number (6333652968).

Almost surely, 2^25151027591 is an apocalyptic number.

25151027591 is a deficient number, since it is larger than the sum of its proper divisors (183584281).

25151027591 is a wasteful number, since it uses less digits than its factorization.

25151027591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183584280.

The product of its (nonzero) digits is 31500, while the sum is 38.

The spelling of 25151027591 in words is "twenty-five billion, one hundred fifty-one million, twenty-seven thousand, five hundred ninety-one".