25790750502 has 64 divisors (see below), whose sum is σ = 57537236736. Its totient is φ = 7640530560.

The previous prime is 25790750501. The next prime is 25790750509. The reversal of 25790750502 is 20505709752.

It is a happy number.

It is a super-2 number, since 2×25790750502² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25790750501) 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, 976908 + ... + 1002960.

It is an arithmetic number, because the mean of its divisors is an integer number (899019324).

Almost surely, 2^25790750502 is an apocalyptic number.

25790750502 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 25790750502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28768618368).

25790750502 is an abundant number, since it is smaller than the sum of its proper divisors (31746486234).

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

25790750502 is a wasteful number, since it uses less digits than its factorization.

25790750502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26405.

The product of its (nonzero) digits is 220500, while the sum is 42.

The spelling of 25790750502 in words is "twenty-five billion, seven hundred ninety million, seven hundred fifty thousand, five hundred two".