25130644477 has 8 divisors (see below), whose sum is σ = 25215654816. Its totient is φ = 25045670832.

The previous prime is 25130644393. The next prime is 25130644489. The reversal of 25130644477 is 77444603152.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25130644477 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 (25130654477) 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, 2404938 + ... + 2415364.

It is an arithmetic number, because the mean of its divisors is an integer number (3151956852).

Almost surely, 2^25130644477 is an apocalyptic number.

It is an amenable number.

25130644477 is a deficient number, since it is larger than the sum of its proper divisors (85010339).

25130644477 is a wasteful number, since it uses less digits than its factorization.

25130644477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18347.

The product of its (nonzero) digits is 564480, while the sum is 43.

The spelling of 25130644477 in words is "twenty-five billion, one hundred thirty million, six hundred forty-four thousand, four hundred seventy-seven".