25402701044 has 96 divisors (see below), whose sum is σ = 54316604160. Its totient is φ = 10147479552.

The previous prime is 25402701043. The next prime is 25402701059. The reversal of 25402701044 is 44010720452.

It is a junction number, because it is equal to n+sod(n) for n = 25402700998 and 25402701016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25402701043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25175612 + ... + 25176620.

It is an arithmetic number, because the mean of its divisors is an integer number (565797960).

Almost surely, 2^25402701044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25402701044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27158302080).

25402701044 is an abundant number, since it is smaller than the sum of its proper divisors (28913903116).

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

25402701044 is a wasteful number, since it uses less digits than its factorization.

25402701044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497 (or 1495 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 29.

The spelling of 25402701044 in words is "twenty-five billion, four hundred two million, seven hundred one thousand, forty-four".