25280051675406 has 128 divisors (see below), whose sum is σ = 56565842268672. Its totient is φ = 7467326976000.

The previous prime is 25280051675387. The next prime is 25280051675407. The reversal of 25280051675406 is 60457615008252.

It is a super-2 number, since 2×25280051675406² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25280051675407) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 327037621 + ... + 327114911.

It is an arithmetic number, because the mean of its divisors is an integer number (441920642724).

Almost surely, 2^{25280051675406} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25280051675406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28282921134336).

25280051675406 is an abundant number, since it is smaller than the sum of its proper divisors (31285790593266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25280051675406 is a wasteful number, since it uses less digits than its factorization.

25280051675406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78098.

The product of its (nonzero) digits is 4032000, while the sum is 51.

The spelling of 25280051675406 in words is "twenty-five trillion, two hundred eighty billion, fifty-one million, six hundred seventy-five thousand, four hundred six".