25313403621 has 8 divisors (see below), whose sum is σ = 36819496224. Its totient is φ = 15341456720.

The previous prime is 25313403611. The next prime is 25313403667. The reversal of 25313403621 is 12630431352.

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 25313403621 - 2²¹ = 25311306469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25313403611) 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, 383536386 + ... + 383536451.

It is an arithmetic number, because the mean of its divisors is an integer number (4602437028).

Almost surely, 2^25313403621 is an apocalyptic number.

It is an amenable number.

25313403621 is a deficient number, since it is larger than the sum of its proper divisors (11506092603).

25313403621 is a wasteful number, since it uses less digits than its factorization.

25313403621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767072851.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 25313403621 its reverse (12630431352), we get a palindrome (37943834973).

The spelling of 25313403621 in words is "twenty-five billion, three hundred thirteen million, four hundred three thousand, six hundred twenty-one".