25617130647674 has 4 divisors (see below), whose sum is σ = 38425695971514. Its totient is φ = 12808565323836.

The previous prime is 25617130647637. The next prime is 25617130647707. The reversal of 25617130647674 is 47674603171652.

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

It can be written as a sum of positive squares in only one way, i.e., 25566746111449 + 50384536225 = 5056357^2 + 224465^2 .

It is a super-2 number, since 2×25617130647674² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6404282661917 + ... + 6404282661920.

Almost surely, 2^{25617130647674} is an apocalyptic number.

25617130647674 is a deficient number, since it is larger than the sum of its proper divisors (12808565323840).

25617130647674 is a wasteful number, since it uses less digits than its factorization.

25617130647674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12808565323839.

The product of its (nonzero) digits is 35562240, while the sum is 59.

The spelling of 25617130647674 in words is "twenty-five trillion, six hundred seventeen billion, one hundred thirty million, six hundred forty-seven thousand, six hundred seventy-four".