25026402740 has 24 divisors (see below), whose sum is σ = 52559190600. Its totient is φ = 10009847808.

The previous prime is 25026402707. The next prime is 25026402749. The reversal of 25026402740 is 4720462052.

It can be written as a sum of positive squares in 4 ways, for example, as 6923238436 + 18103164304 = 83206^2 + 134548^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25026402697 and 25026402706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25026402749) 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, 313124 + ... + 384836.

It is an arithmetic number, because the mean of its divisors is an integer number (2189966275).

Almost surely, 2^25026402740 is an apocalyptic number.

25026402740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25026402740 is an abundant number, since it is smaller than the sum of its proper divisors (27532787860).

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

25026402740 is a wasteful number, since it uses less digits than its factorization.

25026402740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89171 (or 89169 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

Adding to 25026402740 its reverse (4720462052), we get a palindrome (29746864792).

The spelling of 25026402740 in words is "twenty-five billion, twenty-six million, four hundred two thousand, seven hundred forty".