25397040927 has 4 divisors (see below), whose sum is σ = 33862721240. Its totient is φ = 16931360616.

The previous prime is 25397040917. The next prime is 25397041001. The reversal of 25397040927 is 72904079352.

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

It is not a de Polignac number, because 25397040927 - 2⁸ = 25397040671 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 (25397040917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4232840152 + ... + 4232840157.

It is an arithmetic number, because the mean of its divisors is an integer number (8465680310).

Almost surely, 2^25397040927 is an apocalyptic number.

25397040927 is a deficient number, since it is larger than the sum of its proper divisors (8465680313).

25397040927 is an equidigital number, since it uses as much as digits as its factorization.

25397040927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8465680312.

The product of its (nonzero) digits is 952560, while the sum is 48.

The spelling of 25397040927 in words is "twenty-five billion, three hundred ninety-seven million, forty thousand, nine hundred twenty-seven".