25130427649 has 8 divisors (see below), whose sum is σ = 25215643368. Its totient is φ = 25045249920.

The previous prime is 25130427643. The next prime is 25130427677. The reversal of 25130427649 is 94672403152.

It can be written as a sum of positive squares in 4 ways, for example, as 212226624 + 24918201025 = 14568^2 + 157855^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25130427649 - 2⁵ = 25130427617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25130427643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2061079 + ... + 2073235.

It is an arithmetic number, because the mean of its divisors is an integer number (3151955421).

Almost surely, 2^25130427649 is an apocalyptic number.

It is an amenable number.

25130427649 is a deficient number, since it is larger than the sum of its proper divisors (85215719).

25130427649 is a wasteful number, since it uses less digits than its factorization.

25130427649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18995.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 25130427649 in words is "twenty-five billion, one hundred thirty million, four hundred twenty-seven thousand, six hundred forty-nine".