25616532401 has 8 divisors (see below), whose sum is σ = 26207224704. Its totient is φ = 25032226240.

The previous prime is 25616532379. The next prime is 25616532407. The reversal of 25616532401 is 10423561652.

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 25616532401 - 2¹⁸ = 25616270257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25616532407) 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, 1588421 + ... + 1604466.

It is an arithmetic number, because the mean of its divisors is an integer number (3275903088).

Almost surely, 2^25616532401 is an apocalyptic number.

It is an amenable number.

25616532401 is a deficient number, since it is larger than the sum of its proper divisors (590692303).

25616532401 is a wasteful number, since it uses less digits than its factorization.

25616532401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3193071.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 25616532401 in words is "twenty-five billion, six hundred sixteen million, five hundred thirty-two thousand, four hundred one".