25290621058561 has 8 divisors (see below), whose sum is σ = 25294951584000. Its totient is φ = 25286290906320.

The previous prime is 25290621058553. The next prime is 25290621058609. The reversal of 25290621058561 is 16585012609252.

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 25290621058561 - 2³ = 25290621058553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25290621058499 and 25290621058508.

It is not an unprimeable number, because it can be changed into a prime (25290621058061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157376910 + ... + 157537528.

It is an arithmetic number, because the mean of its divisors is an integer number (3161868948000).

Almost surely, 2^{25290621058561} is an apocalyptic number.

It is an amenable number.

25290621058561 is a deficient number, since it is larger than the sum of its proper divisors (4330525439).

25290621058561 is a wasteful number, since it uses less digits than its factorization.

25290621058561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186599.

The product of its (nonzero) digits is 2592000, while the sum is 52.

The spelling of 25290621058561 in words is "twenty-five trillion, two hundred ninety billion, six hundred twenty-one million, fifty-eight thousand, five hundred sixty-one".