25745641157 has 4 divisors (see below), whose sum is σ = 26011060236. Its totient is φ = 25480222080.

The previous prime is 25745641139. The next prime is 25745641223. The reversal of 25745641157 is 75114654752.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15526655236 + 10218985921 = 124606^2 + 101089^2 .

It is a cyclic number.

It is not a de Polignac number, because 25745641157 - 2¹⁸ = 25745379013 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 (25745641127) 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, 132709394 + ... + 132709587.

It is an arithmetic number, because the mean of its divisors is an integer number (6502765059).

Almost surely, 2^25745641157 is an apocalyptic number.

It is an amenable number.

25745641157 is a deficient number, since it is larger than the sum of its proper divisors (265419079).

25745641157 is an equidigital number, since it uses as much as digits as its factorization.

25745641157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265419078.

The product of its digits is 1176000, while the sum is 47.

The spelling of 25745641157 in words is "twenty-five billion, seven hundred forty-five million, six hundred forty-one thousand, one hundred fifty-seven".